Finding the Fourth Proportional to 1,069.55, 1,476 and 807.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.55 : 1,476 = 807.11 : x
2. Step 2: Convert to fraction form
   1,069.55/1,476 = 807.11/x
3. Step 3: Cross multiply
   1,069.55x = 1,476 × 807.11
4. Step 4: Simplify right side
   1,069.55x = 1,191,286.98
5. Step 5: Solve for x
   x = 1,191,286.98/1,069.55
6. Step 6: Final answer
   x = 1,113.83