Finding the Fourth Proportional to 2,291.10, 3,161.52 and 1,406.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.10 : 3,161.52 = 1,406.76 : x
2. Step 2: Convert to fraction form
   2,291.10/3,161.52 = 1,406.76/x
3. Step 3: Cross multiply
   2,291.10x = 3,161.52 × 1,406.76
4. Step 4: Simplify right side
   2,291.10x = 4,447,499.88
5. Step 5: Solve for x
   x = 4,447,499.88/2,291.10
6. Step 6: Final answer
   x = 1,941.21