Finding the Fourth Proportional to 1,061.64, 1,465.02 and 619.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.64 : 1,465.02 = 619.52 : x
2. Step 2: Convert to fraction form
   1,061.64/1,465.02 = 619.52/x
3. Step 3: Cross multiply
   1,061.64x = 1,465.02 × 619.52
4. Step 4: Simplify right side
   1,061.64x = 907,601.87
5. Step 5: Solve for x
   x = 907,601.87/1,061.64
6. Step 6: Final answer
   x = 854.91