Finding the Fourth Proportional to 1,111,561.30, 1,533,934.56 and 628,116.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111,561.30 : 1,533,934.56 = 628,116.04 : x
2. Step 2: Convert to fraction form
   1,111,561.30/1,533,934.56 = 628,116.04/x
3. Step 3: Cross multiply
   1,111,561.30x = 1,533,934.56 × 628,116.04
4. Step 4: Simplify right side
   1,111,561.30x = 963,488,901,446.34
5. Step 5: Solve for x
   x = 963,488,901,446.34/1,111,561.30
6. Step 6: Final answer
   x = 866,788.81