Finding the Fourth Proportional to 1,587.87, 2,380.86 and 1,372.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,587.87 : 2,380.86 = 1,372.41 : x
2. Step 2: Convert to fraction form
   1,587.87/2,380.86 = 1,372.41/x
3. Step 3: Cross multiply
   1,587.87x = 2,380.86 × 1,372.41
4. Step 4: Simplify right side
   1,587.87x = 3,267,516.07
5. Step 5: Solve for x
   x = 3,267,516.07/1,587.87
6. Step 6: Final answer
   x = 2,057.80