Finding the Fourth Proportional to 1,146.04, 1,581.50 and 622.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.04 : 1,581.50 = 622.06 : x
2. Step 2: Convert to fraction form
   1,146.04/1,581.50 = 622.06/x
3. Step 3: Cross multiply
   1,146.04x = 1,581.50 × 622.06
4. Step 4: Simplify right side
   1,146.04x = 983,785.49
5. Step 5: Solve for x
   x = 983,785.49/1,146.04
6. Step 6: Final answer
   x = 858.42