Finding the Fourth Proportional to 2,699.52, 4,048.50 and 1,139.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,699.52 : 4,048.50 = 1,139.88 : x
2. Step 2: Convert to fraction form
   2,699.52/4,048.50 = 1,139.88/x
3. Step 3: Cross multiply
   2,699.52x = 4,048.50 × 1,139.88
4. Step 4: Simplify right side
   2,699.52x = 4,614,808.45
5. Step 5: Solve for x
   x = 4,614,808.45/2,699.52
6. Step 6: Final answer
   x = 1,709.49