Finding the Fourth Proportional to 2,587.32, 3,877.98 and 1,807.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.32 : 3,877.98 = 1,807.56 : x
2. Step 2: Convert to fraction form
   2,587.32/3,877.98 = 1,807.56/x
3. Step 3: Cross multiply
   2,587.32x = 3,877.98 × 1,807.56
4. Step 4: Simplify right side
   2,587.32x = 7,009,681.53
5. Step 5: Solve for x
   x = 7,009,681.53/2,587.32
6. Step 6: Final answer
   x = 2,709.24