Finding the Fourth Proportional to 1,200.49, 1,792.06 and 1,110.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.49 : 1,792.06 = 1,110.31 : x
2. Step 2: Convert to fraction form
   1,200.49/1,792.06 = 1,110.31/x
3. Step 3: Cross multiply
   1,200.49x = 1,792.06 × 1,110.31
4. Step 4: Simplify right side
   1,200.49x = 1,989,734.88
5. Step 5: Solve for x
   x = 1,989,734.88/1,200.49
6. Step 6: Final answer
   x = 1,657.44