Finding the Fourth Proportional to 1,870.77, 2,580.87 and 1,372.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.77 : 2,580.87 = 1,372.55 : x
2. Step 2: Convert to fraction form
   1,870.77/2,580.87 = 1,372.55/x
3. Step 3: Cross multiply
   1,870.77x = 2,580.87 × 1,372.55
4. Step 4: Simplify right side
   1,870.77x = 3,542,358.61
5. Step 5: Solve for x
   x = 3,542,358.61/1,870.77
6. Step 6: Final answer
   x = 1,893.53