Finding the Fourth Proportional to 1,061.58, 1,465.06 and 619.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.58 : 1,465.06 = 619.47 : x
2. Step 2: Convert to fraction form
   1,061.58/1,465.06 = 619.47/x
3. Step 3: Cross multiply
   1,061.58x = 1,465.06 × 619.47
4. Step 4: Simplify right side
   1,061.58x = 907,560.72
5. Step 5: Solve for x
   x = 907,560.72/1,061.58
6. Step 6: Final answer
   x = 854.92