Finding the Fourth Proportional to 2,710.24, 4,063.84 and 861.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,710.24 : 4,063.84 = 861.02 : x
2. Step 2: Convert to fraction form
   2,710.24/4,063.84 = 861.02/x
3. Step 3: Cross multiply
   2,710.24x = 4,063.84 × 861.02
4. Step 4: Simplify right side
   2,710.24x = 3,499,047.52
5. Step 5: Solve for x
   x = 3,499,047.52/2,710.24
6. Step 6: Final answer
   x = 1,291.05