Finding the Fourth Proportional to 1,359.42, 1,876.43 and 800.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.42 : 1,876.43 = 800.11 : x
2. Step 2: Convert to fraction form
   1,359.42/1,876.43 = 800.11/x
3. Step 3: Cross multiply
   1,359.42x = 1,876.43 × 800.11
4. Step 4: Simplify right side
   1,359.42x = 1,501,350.41
5. Step 5: Solve for x
   x = 1,501,350.41/1,359.42
6. Step 6: Final answer
   x = 1,104.41