Finding the Fourth Proportional to 1,233.83, 1,702.85 and 709.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,233.83 : 1,702.85 = 709.86 : x
2. Step 2: Convert to fraction form
   1,233.83/1,702.85 = 709.86/x
3. Step 3: Cross multiply
   1,233.83x = 1,702.85 × 709.86
4. Step 4: Simplify right side
   1,233.83x = 1,208,781.55
5. Step 5: Solve for x
   x = 1,208,781.55/1,233.83
6. Step 6: Final answer
   x = 979.70