Finding the Fourth Proportional to 1,626.30, 2,242.88 and 1,311.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,626.30 : 2,242.88 = 1,311.47 : x
2. Step 2: Convert to fraction form
   1,626.30/2,242.88 = 1,311.47/x
3. Step 3: Cross multiply
   1,626.30x = 2,242.88 × 1,311.47
4. Step 4: Simplify right side
   1,626.30x = 2,941,468.88
5. Step 5: Solve for x
   x = 2,941,468.88/1,626.30
6. Step 6: Final answer
   x = 1,808.69