Finding the Fourth Proportional to 1,875.33, 2,587.80 and 1,078.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.33 : 2,587.80 = 1,078.61 : x
2. Step 2: Convert to fraction form
   1,875.33/2,587.80 = 1,078.61/x
3. Step 3: Cross multiply
   1,875.33x = 2,587.80 × 1,078.61
4. Step 4: Simplify right side
   1,875.33x = 2,791,221.56
5. Step 5: Solve for x
   x = 2,791,221.56/1,875.33
6. Step 6: Final answer
   x = 1,488.39