Finding the Fourth Proportional to 3,111.40, 4,291.68 and 2,114.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.40 : 4,291.68 = 2,114.56 : x
2. Step 2: Convert to fraction form
   3,111.40/4,291.68 = 2,114.56/x
3. Step 3: Cross multiply
   3,111.40x = 4,291.68 × 2,114.56
4. Step 4: Simplify right side
   3,111.40x = 9,075,014.86
5. Step 5: Solve for x
   x = 9,075,014.86/3,111.40
6. Step 6: Final answer
   x = 2,916.70