Finding the Fourth Proportional to 1,906.52, 2,631.07 and 1,109.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.52 : 2,631.07 = 1,109.78 : x
2. Step 2: Convert to fraction form
   1,906.52/2,631.07 = 1,109.78/x
3. Step 3: Cross multiply
   1,906.52x = 2,631.07 × 1,109.78
4. Step 4: Simplify right side
   1,906.52x = 2,919,908.86
5. Step 5: Solve for x
   x = 2,919,908.86/1,906.52
6. Step 6: Final answer
   x = 1,531.54