Finding the Fourth Proportional to 1,023.27, 1,412.77 and 630.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,023.27 : 1,412.77 = 630.52 : x
2. Step 2: Convert to fraction form
   1,023.27/1,412.77 = 630.52/x
3. Step 3: Cross multiply
   1,023.27x = 1,412.77 × 630.52
4. Step 4: Simplify right side
   1,023.27x = 890,779.74
5. Step 5: Solve for x
   x = 890,779.74/1,023.27
6. Step 6: Final answer
   x = 870.52