Finding the Fourth Proportional to 2,700.58, 4,051.21 and 752.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,700.58 : 4,051.21 = 752.78 : x
2. Step 2: Convert to fraction form
   2,700.58/4,051.21 = 752.78/x
3. Step 3: Cross multiply
   2,700.58x = 4,051.21 × 752.78
4. Step 4: Simplify right side
   2,700.58x = 3,049,669.86
5. Step 5: Solve for x
   x = 3,049,669.86/2,700.58
6. Step 6: Final answer
   x = 1,129.26