Finding the Fourth Proportional to 1,296,384.01, 1,789,010.28 and 715,607.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296,384.01 : 1,789,010.28 = 715,607.49 : x
2. Step 2: Convert to fraction form
   1,296,384.01/1,789,010.28 = 715,607.49/x
3. Step 3: Cross multiply
   1,296,384.01x = 1,789,010.28 × 715,607.49
4. Step 4: Simplify right side
   1,296,384.01x = 1,280,229,156,055.00
5. Step 5: Solve for x
   x = 1,280,229,156,055.00/1,296,384.01
6. Step 6: Final answer
   x = 987,538.53