Finding the Fourth Proportional to 1,061.10, 1,464.40 and 619.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.10 : 1,464.40 = 619.03 : x
2. Step 2: Convert to fraction form
   1,061.10/1,464.40 = 619.03/x
3. Step 3: Cross multiply
   1,061.10x = 1,464.40 × 619.03
4. Step 4: Simplify right side
   1,061.10x = 906,500.21
5. Step 5: Solve for x
   x = 906,500.21/1,061.10
6. Step 6: Final answer
   x = 854.31