Finding the Fourth Proportional to 1,877.10, 2,813.78 and 888.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,877.10 : 2,813.78 = 888.15 : x
2. Step 2: Convert to fraction form
   1,877.10/2,813.78 = 888.15/x
3. Step 3: Cross multiply
   1,877.10x = 2,813.78 × 888.15
4. Step 4: Simplify right side
   1,877.10x = 2,499,061.28
5. Step 5: Solve for x
   x = 2,499,061.28/1,877.10
6. Step 6: Final answer
   x = 1,331.34