Finding the Fourth Proportional to 2,613.52, 3,920.73 and 1,381.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.52 : 3,920.73 = 1,381.96 : x
2. Step 2: Convert to fraction form
   2,613.52/3,920.73 = 1,381.96/x
3. Step 3: Cross multiply
   2,613.52x = 3,920.73 × 1,381.96
4. Step 4: Simplify right side
   2,613.52x = 5,418,292.03
5. Step 5: Solve for x
   x = 5,418,292.03/2,613.52
6. Step 6: Final answer
   x = 2,073.18