Finding the Fourth Proportional to 1,025.90, 1,416.06 and 606.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025.90 : 1,416.06 = 606.22 : x
2. Step 2: Convert to fraction form
   1,025.90/1,416.06 = 606.22/x
3. Step 3: Cross multiply
   1,025.90x = 1,416.06 × 606.22
4. Step 4: Simplify right side
   1,025.90x = 858,443.89
5. Step 5: Solve for x
   x = 858,443.89/1,025.90
6. Step 6: Final answer
   x = 836.77