Finding the Fourth Proportional to 1,441.47, 1,990.19 and 1,109.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.47 : 1,990.19 = 1,109.31 : x
2. Step 2: Convert to fraction form
   1,441.47/1,990.19 = 1,109.31/x
3. Step 3: Cross multiply
   1,441.47x = 1,990.19 × 1,109.31
4. Step 4: Simplify right side
   1,441.47x = 2,207,737.67
5. Step 5: Solve for x
   x = 2,207,737.67/1,441.47
6. Step 6: Final answer
   x = 1,531.59