Finding the Fourth Proportional to 3,870.34, 5,341.31 and 2,191.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.34 : 5,341.31 = 2,191.92 : x
2. Step 2: Convert to fraction form
   3,870.34/5,341.31 = 2,191.92/x
3. Step 3: Cross multiply
   3,870.34x = 5,341.31 × 2,191.92
4. Step 4: Simplify right side
   3,870.34x = 11,707,724.22
5. Step 5: Solve for x
   x = 11,707,724.22/3,870.34
6. Step 6: Final answer
   x = 3,024.99