Finding the Fourth Proportional to 1,894.48, 2,613.88 and 1,108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,894.48 : 2,613.88 = 1,108.72 : x
2. Step 2: Convert to fraction form
   1,894.48/2,613.88 = 1,108.72/x
3. Step 3: Cross multiply
   1,894.48x = 2,613.88 × 1,108.72
4. Step 4: Simplify right side
   1,894.48x = 2,898,061.03
5. Step 5: Solve for x
   x = 2,898,061.03/1,894.48
6. Step 6: Final answer
   x = 1,529.74