Finding the Fourth Proportional to 2,931.81, 4,397.37 and 740.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,931.81 : 4,397.37 = 740.42 : x
2. Step 2: Convert to fraction form
   2,931.81/4,397.37 = 740.42/x
3. Step 3: Cross multiply
   2,931.81x = 4,397.37 × 740.42
4. Step 4: Simplify right side
   2,931.81x = 3,255,900.70
5. Step 5: Solve for x
   x = 3,255,900.70/2,931.81
6. Step 6: Final answer
   x = 1,110.54