Finding the Fourth Proportional to 1,369.32, 1,891.56 and 1,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.32 : 1,891.56 = 1,108.50 : x
2. Step 2: Convert to fraction form
   1,369.32/1,891.56 = 1,108.50/x
3. Step 3: Cross multiply
   1,369.32x = 1,891.56 × 1,108.50
4. Step 4: Simplify right side
   1,369.32x = 2,096,794.26
5. Step 5: Solve for x
   x = 2,096,794.26/1,369.32
6. Step 6: Final answer
   x = 1,531.27