Finding the Fourth Proportional to 1,349.55, 1,862.33 and 906.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,349.55 : 1,862.33 = 906.75 : x
2. Step 2: Convert to fraction form
   1,349.55/1,862.33 = 906.75/x
3. Step 3: Cross multiply
   1,349.55x = 1,862.33 × 906.75
4. Step 4: Simplify right side
   1,349.55x = 1,688,663.19
5. Step 5: Solve for x
   x = 1,688,663.19/1,349.55
6. Step 6: Final answer
   x = 1,251.28