Finding the Fourth Proportional to 1,061.67, 1,465.04 and 619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.67 : 1,465.04 = 619.50 : x
2. Step 2: Convert to fraction form
   1,061.67/1,465.04 = 619.50/x
3. Step 3: Cross multiply
   1,061.67x = 1,465.04 × 619.50
4. Step 4: Simplify right side
   1,061.67x = 907,589.18
5. Step 5: Solve for x
   x = 907,589.18/1,061.67
6. Step 6: Final answer
   x = 854.87