Finding the Fourth Proportional to 1,061.49, 1,464.51 and 619.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.49 : 1,464.51 = 619.23 : x
2. Step 2: Convert to fraction form
   1,061.49/1,464.51 = 619.23/x
3. Step 3: Cross multiply
   1,061.49x = 1,464.51 × 619.23
4. Step 4: Simplify right side
   1,061.49x = 906,868.53
5. Step 5: Solve for x
   x = 906,868.53/1,061.49
6. Step 6: Final answer
   x = 854.34