Finding the Fourth Proportional to 1,522.79, 2,288.46 and 906.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.79 : 2,288.46 = 906.61 : x
2. Step 2: Convert to fraction form
   1,522.79/2,288.46 = 906.61/x
3. Step 3: Cross multiply
   1,522.79x = 2,288.46 × 906.61
4. Step 4: Simplify right side
   1,522.79x = 2,074,740.72
5. Step 5: Solve for x
   x = 2,074,740.72/1,522.79
6. Step 6: Final answer
   x = 1,362.46