Finding the Fourth Proportional to 3,684.72, 5,079.52 and 2,897.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,684.72 : 5,079.52 = 2,897.40 : x
2. Step 2: Convert to fraction form
   3,684.72/5,079.52 = 2,897.40/x
3. Step 3: Cross multiply
   3,684.72x = 5,079.52 × 2,897.40
4. Step 4: Simplify right side
   3,684.72x = 14,717,401.25
5. Step 5: Solve for x
   x = 14,717,401.25/3,684.72
6. Step 6: Final answer
   x = 3,994.17