Finding the Fourth Proportional to 1,061.24, 1,464.20 and 619.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.24 : 1,464.20 = 619.12 : x
2. Step 2: Convert to fraction form
   1,061.24/1,464.20 = 619.12/x
3. Step 3: Cross multiply
   1,061.24x = 1,464.20 × 619.12
4. Step 4: Simplify right side
   1,061.24x = 906,515.50
5. Step 5: Solve for x
   x = 906,515.50/1,061.24
6. Step 6: Final answer
   x = 854.20