Finding the Fourth Proportional to 1,375.02, 1,896.78 and 876.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.02 : 1,896.78 = 876.78 : x
2. Step 2: Convert to fraction form
   1,375.02/1,896.78 = 876.78/x
3. Step 3: Cross multiply
   1,375.02x = 1,896.78 × 876.78
4. Step 4: Simplify right side
   1,375.02x = 1,663,058.77
5. Step 5: Solve for x
   x = 1,663,058.77/1,375.02
6. Step 6: Final answer
   x = 1,209.48