Finding the Fourth Proportional to 862,409.20, 1,181,504.89 and 830,086.56

Step by Step Solution

1. Step 1: Write the proportion equation
   862,409.20 : 1,181,504.89 = 830,086.56 : x
2. Step 2: Convert to fraction form
   862,409.20/1,181,504.89 = 830,086.56/x
3. Step 3: Cross multiply
   862,409.20x = 1,181,504.89 × 830,086.56
4. Step 4: Simplify right side
   862,409.20x = 980,751,326,809.52
5. Step 5: Solve for x
   x = 980,751,326,809.52/862,409.20
6. Step 6: Final answer
   x = 1,137,222.71