Finding the Fourth Proportional to 1,142.89, 1,575.72 and 937.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.89 : 1,575.72 = 937.49 : x
2. Step 2: Convert to fraction form
   1,142.89/1,575.72 = 937.49/x
3. Step 3: Cross multiply
   1,142.89x = 1,575.72 × 937.49
4. Step 4: Simplify right side
   1,142.89x = 1,477,221.74
5. Step 5: Solve for x
   x = 1,477,221.74/1,142.89
6. Step 6: Final answer
   x = 1,292.53