Finding the Fourth Proportional to 1,366.89, 1,885.89 and 807.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.89 : 1,885.89 = 807.42 : x
2. Step 2: Convert to fraction form
   1,366.89/1,885.89 = 807.42/x
3. Step 3: Cross multiply
   1,366.89x = 1,885.89 × 807.42
4. Step 4: Simplify right side
   1,366.89x = 1,522,705.30
5. Step 5: Solve for x
   x = 1,522,705.30/1,366.89
6. Step 6: Final answer
   x = 1,113.99