Finding the Fourth Proportional to 1,061.16, 1,464.56 and 619.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.16 : 1,464.56 = 619.31 : x
2. Step 2: Convert to fraction form
   1,061.16/1,464.56 = 619.31/x
3. Step 3: Cross multiply
   1,061.16x = 1,464.56 × 619.31
4. Step 4: Simplify right side
   1,061.16x = 907,006.23
5. Step 5: Solve for x
   x = 907,006.23/1,061.16
6. Step 6: Final answer
   x = 854.73