Finding the Fourth Proportional to 1,200.94, 1,659.72 and 906.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.94 : 1,659.72 = 906.10 : x
2. Step 2: Convert to fraction form
   1,200.94/1,659.72 = 906.10/x
3. Step 3: Cross multiply
   1,200.94x = 1,659.72 × 906.10
4. Step 4: Simplify right side
   1,200.94x = 1,503,872.29
5. Step 5: Solve for x
   x = 1,503,872.29/1,200.94
6. Step 6: Final answer
   x = 1,252.25