Finding the Fourth Proportional to 2,372.32, 3,559.36 and 1,398.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,372.32 : 3,559.36 = 1,398.72 : x
2. Step 2: Convert to fraction form
   2,372.32/3,559.36 = 1,398.72/x
3. Step 3: Cross multiply
   2,372.32x = 3,559.36 × 1,398.72
4. Step 4: Simplify right side
   2,372.32x = 4,978,548.02
5. Step 5: Solve for x
   x = 4,978,548.02/2,372.32
6. Step 6: Final answer
   x = 2,098.60