Finding the Fourth Proportional to 1,640,799,848.72, 2,264,303,901.89 and 898,243,911.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640,799,848.72 : 2,264,303,901.89 = 898,243,911.47 : x
2. Step 2: Convert to fraction form
   1,640,799,848.72/2,264,303,901.89 = 898,243,911.47/x
3. Step 3: Cross multiply
   1,640,799,848.72x = 2,264,303,901.89 × 898,243,911.47
4. Step 4: Simplify right side
   1,640,799,848.72x = 2,033,897,193,590,456,576
5. Step 5: Solve for x
   x = 2,033,897,193,590,456,576/1,640,799,848.72
6. Step 6: Final answer
   x = 1,239,576,658.41