Finding the Fourth Proportional to 2,931.66, 4,398.39 and 1,200.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,931.66 : 4,398.39 = 1,200.42 : x
2. Step 2: Convert to fraction form
   2,931.66/4,398.39 = 1,200.42/x
3. Step 3: Cross multiply
   2,931.66x = 4,398.39 × 1,200.42
4. Step 4: Simplify right side
   2,931.66x = 5,279,915.32
5. Step 5: Solve for x
   x = 5,279,915.32/2,931.66
6. Step 6: Final answer
   x = 1,801.00