Finding the Fourth Proportional to 1,360.07, 1,876.91 and 800.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.07 : 1,876.91 = 800.57 : x
2. Step 2: Convert to fraction form
   1,360.07/1,876.91 = 800.57/x
3. Step 3: Cross multiply
   1,360.07x = 1,876.91 × 800.57
4. Step 4: Simplify right side
   1,360.07x = 1,502,584.45
5. Step 5: Solve for x
   x = 1,502,584.45/1,360.07
6. Step 6: Final answer
   x = 1,104.79