Finding the Fourth Proportional to 1,061.18, 1,464.31 and 619.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.18 : 1,464.31 = 619.10 : x
2. Step 2: Convert to fraction form
   1,061.18/1,464.31 = 619.10/x
3. Step 3: Cross multiply
   1,061.18x = 1,464.31 × 619.10
4. Step 4: Simplify right side
   1,061.18x = 906,554.32
5. Step 5: Solve for x
   x = 906,554.32/1,061.18
6. Step 6: Final answer
   x = 854.29