Finding the Fourth Proportional to 1,366.60, 1,885.86 and 807.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.60 : 1,885.86 = 807.16 : x
2. Step 2: Convert to fraction form
   1,366.60/1,885.86 = 807.16/x
3. Step 3: Cross multiply
   1,366.60x = 1,885.86 × 807.16
4. Step 4: Simplify right side
   1,366.60x = 1,522,190.76
5. Step 5: Solve for x
   x = 1,522,190.76/1,366.60
6. Step 6: Final answer
   x = 1,113.85