Finding the Fourth Proportional to 1,039.04, 1,434.04 and 619.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.04 : 1,434.04 = 619.62 : x
2. Step 2: Convert to fraction form
   1,039.04/1,434.04 = 619.62/x
3. Step 3: Cross multiply
   1,039.04x = 1,434.04 × 619.62
4. Step 4: Simplify right side
   1,039.04x = 888,559.86
5. Step 5: Solve for x
   x = 888,559.86/1,039.04
6. Step 6: Final answer
   x = 855.17