Finding the Fourth Proportional to 2,981.58, 4,113.37 and 1,919.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,981.58 : 4,113.37 = 1,919.15 : x
2. Step 2: Convert to fraction form
   2,981.58/4,113.37 = 1,919.15/x
3. Step 3: Cross multiply
   2,981.58x = 4,113.37 × 1,919.15
4. Step 4: Simplify right side
   2,981.58x = 7,894,174.04
5. Step 5: Solve for x
   x = 7,894,174.04/2,981.58
6. Step 6: Final answer
   x = 2,647.65