Finding the Fourth Proportional to 2,373.88, 3,557.76 and 1,138.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,373.88 : 3,557.76 = 1,138.72 : x
2. Step 2: Convert to fraction form
   2,373.88/3,557.76 = 1,138.72/x
3. Step 3: Cross multiply
   2,373.88x = 3,557.76 × 1,138.72
4. Step 4: Simplify right side
   2,373.88x = 4,051,292.47
5. Step 5: Solve for x
   x = 4,051,292.47/2,373.88
6. Step 6: Final answer
   x = 1,706.61