Finding the Fourth Proportional to 1,584,978.09, 2,187,269.76 and 905,929.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,978.09 : 2,187,269.76 = 905,929.17 : x
2. Step 2: Convert to fraction form
   1,584,978.09/2,187,269.76 = 905,929.17/x
3. Step 3: Cross multiply
   1,584,978.09x = 2,187,269.76 × 905,929.17
4. Step 4: Simplify right side
   1,584,978.09x = 1,981,511,478,242.90
5. Step 5: Solve for x
   x = 1,981,511,478,242.90/1,584,978.09
6. Step 6: Final answer
   x = 1,250,182.25