Finding the Fourth Proportional to 708,966.72, 978,700.32 and 611,784

Step by Step Solution

1. Step 1: Write the proportion equation
   708,966.72 : 978,700.32 = 611,784 : x
2. Step 2: Convert to fraction form
   708,966.72/978,700.32 = 611,784/x
3. Step 3: Cross multiply
   708,966.72x = 978,700.32 × 611,784
4. Step 4: Simplify right side
   708,966.72x = 598,753,196,570.88
5. Step 5: Solve for x
   x = 598,753,196,570.88/708,966.72
6. Step 6: Final answer
   x = 844,543.45