Finding the Fourth Proportional to 1,061.29, 1,464.57 and 619.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.29 : 1,464.57 = 619.10 : x
2. Step 2: Convert to fraction form
   1,061.29/1,464.57 = 619.10/x
3. Step 3: Cross multiply
   1,061.29x = 1,464.57 × 619.10
4. Step 4: Simplify right side
   1,061.29x = 906,718.52
5. Step 5: Solve for x
   x = 906,718.52/1,061.29
6. Step 6: Final answer
   x = 854.36