Finding the Fourth Proportional to 1,061.71, 1,464.88 and 619.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.71 : 1,464.88 = 619.34 : x
2. Step 2: Convert to fraction form
   1,061.71/1,464.88 = 619.34/x
3. Step 3: Cross multiply
   1,061.71x = 1,464.88 × 619.34
4. Step 4: Simplify right side
   1,061.71x = 907,258.78
5. Step 5: Solve for x
   x = 907,258.78/1,061.71
6. Step 6: Final answer
   x = 854.53