Finding the Fourth Proportional to 2,502.59, 3,754.76 and 771.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,502.59 : 3,754.76 = 771.21 : x
2. Step 2: Convert to fraction form
   2,502.59/3,754.76 = 771.21/x
3. Step 3: Cross multiply
   2,502.59x = 3,754.76 × 771.21
4. Step 4: Simplify right side
   2,502.59x = 2,895,704.60
5. Step 5: Solve for x
   x = 2,895,704.60/2,502.59
6. Step 6: Final answer
   x = 1,157.09