Finding the Fourth Proportional to 1,182.86, 1,632.54 and 710.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.86 : 1,632.54 = 710.78 : x
2. Step 2: Convert to fraction form
   1,182.86/1,632.54 = 710.78/x
3. Step 3: Cross multiply
   1,182.86x = 1,632.54 × 710.78
4. Step 4: Simplify right side
   1,182.86x = 1,160,376.78
5. Step 5: Solve for x
   x = 1,160,376.78/1,182.86
6. Step 6: Final answer
   x = 980.99