Finding the Fourth Proportional to 2,501.91, 3,752.73 and 770.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501.91 : 3,752.73 = 770.55 : x
2. Step 2: Convert to fraction form
   2,501.91/3,752.73 = 770.55/x
3. Step 3: Cross multiply
   2,501.91x = 3,752.73 × 770.55
4. Step 4: Simplify right side
   2,501.91x = 2,891,666.10
5. Step 5: Solve for x
   x = 2,891,666.10/2,501.91
6. Step 6: Final answer
   x = 1,155.78