Finding the Fourth Proportional to 870,616.50, 1,300,062.18 and 711,009.28

Step by Step Solution

1. Step 1: Write the proportion equation
   870,616.50 : 1,300,062.18 = 711,009.28 : x
2. Step 2: Convert to fraction form
   870,616.50/1,300,062.18 = 711,009.28/x
3. Step 3: Cross multiply
   870,616.50x = 1,300,062.18 × 711,009.28
4. Step 4: Simplify right side
   870,616.50x = 924,356,277,020.18
5. Step 5: Solve for x
   x = 924,356,277,020.18/870,616.50
6. Step 6: Final answer
   x = 1,061,726.12