Finding the Fourth Proportional to 1,938.88, 2,674.56 and 1,153.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.88 : 2,674.56 = 1,153.18 : x
2. Step 2: Convert to fraction form
   1,938.88/2,674.56 = 1,153.18/x
3. Step 3: Cross multiply
   1,938.88x = 2,674.56 × 1,153.18
4. Step 4: Simplify right side
   1,938.88x = 3,084,249.10
5. Step 5: Solve for x
   x = 3,084,249.10/1,938.88
6. Step 6: Final answer
   x = 1,590.74