Finding the Fourth Proportional to 1,261.83, 1,741.61 and 702.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261.83 : 1,741.61 = 702.50 : x
2. Step 2: Convert to fraction form
   1,261.83/1,741.61 = 702.50/x
3. Step 3: Cross multiply
   1,261.83x = 1,741.61 × 702.50
4. Step 4: Simplify right side
   1,261.83x = 1,223,481.03
5. Step 5: Solve for x
   x = 1,223,481.03/1,261.83
6. Step 6: Final answer
   x = 969.61