Finding the Fourth Proportional to 2,398.61, 3,597.31 and 937.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398.61 : 3,597.31 = 937.78 : x
2. Step 2: Convert to fraction form
   2,398.61/3,597.31 = 937.78/x
3. Step 3: Cross multiply
   2,398.61x = 3,597.31 × 937.78
4. Step 4: Simplify right side
   2,398.61x = 3,373,477.55
5. Step 5: Solve for x
   x = 3,373,477.55/2,398.61
6. Step 6: Final answer
   x = 1,406.43