Finding the Fourth Proportional to 1,103.81, 1,522.33 and 906.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.81 : 1,522.33 = 906.98 : x
2. Step 2: Convert to fraction form
   1,103.81/1,522.33 = 906.98/x
3. Step 3: Cross multiply
   1,103.81x = 1,522.33 × 906.98
4. Step 4: Simplify right side
   1,103.81x = 1,380,712.98
5. Step 5: Solve for x
   x = 1,380,712.98/1,103.81
6. Step 6: Final answer
   x = 1,250.87