Finding the Fourth Proportional to 1,139,205.30, 1,572,103.71 and 649,160.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,205.30 : 1,572,103.71 = 649,160.79 : x
2. Step 2: Convert to fraction form
   1,139,205.30/1,572,103.71 = 649,160.79/x
3. Step 3: Cross multiply
   1,139,205.30x = 1,572,103.71 × 649,160.79
4. Step 4: Simplify right side
   1,139,205.30x = 1,020,548,086,345.53
5. Step 5: Solve for x
   x = 1,020,548,086,345.53/1,139,205.30
6. Step 6: Final answer
   x = 895,842.12