Finding the Fourth Proportional to 1,061.32, 1,464.52 and 619.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.32 : 1,464.52 = 619.20 : x
2. Step 2: Convert to fraction form
   1,061.32/1,464.52 = 619.20/x
3. Step 3: Cross multiply
   1,061.32x = 1,464.52 × 619.20
4. Step 4: Simplify right side
   1,061.32x = 906,830.78
5. Step 5: Solve for x
   x = 906,830.78/1,061.32
6. Step 6: Final answer
   x = 854.44