Finding the Fourth Proportional to 1,150.90, 1,725.72 and 906.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.90 : 1,725.72 = 906.70 : x
2. Step 2: Convert to fraction form
   1,150.90/1,725.72 = 906.70/x
3. Step 3: Cross multiply
   1,150.90x = 1,725.72 × 906.70
4. Step 4: Simplify right side
   1,150.90x = 1,564,710.32
5. Step 5: Solve for x
   x = 1,564,710.32/1,150.90
6. Step 6: Final answer
   x = 1,359.55