Finding the Fourth Proportional to 2,499.57, 3,749.16 and 1,038.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.57 : 3,749.16 = 1,038.66 : x
2. Step 2: Convert to fraction form
   2,499.57/3,749.16 = 1,038.66/x
3. Step 3: Cross multiply
   2,499.57x = 3,749.16 × 1,038.66
4. Step 4: Simplify right side
   2,499.57x = 3,894,102.53
5. Step 5: Solve for x
   x = 3,894,102.53/2,499.57
6. Step 6: Final answer
   x = 1,557.91