Finding the Fourth Proportional to 1,360.40, 1,877.13 and 800.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.40 : 1,877.13 = 800.75 : x
2. Step 2: Convert to fraction form
   1,360.40/1,877.13 = 800.75/x
3. Step 3: Cross multiply
   1,360.40x = 1,877.13 × 800.75
4. Step 4: Simplify right side
   1,360.40x = 1,503,111.85
5. Step 5: Solve for x
   x = 1,503,111.85/1,360.40
6. Step 6: Final answer
   x = 1,104.90