Finding the Fourth Proportional to 2,280.80, 3,145.32 and 1,887.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.80 : 3,145.32 = 1,887.08 : x
2. Step 2: Convert to fraction form
   2,280.80/3,145.32 = 1,887.08/x
3. Step 3: Cross multiply
   2,280.80x = 3,145.32 × 1,887.08
4. Step 4: Simplify right side
   2,280.80x = 5,935,470.47
5. Step 5: Solve for x
   x = 5,935,470.47/2,280.80
6. Step 6: Final answer
   x = 2,602.36