Finding the Fourth Proportional to 2,111.68, 3,162.08 and 1,379.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.68 : 3,162.08 = 1,379.12 : x
2. Step 2: Convert to fraction form
   2,111.68/3,162.08 = 1,379.12/x
3. Step 3: Cross multiply
   2,111.68x = 3,162.08 × 1,379.12
4. Step 4: Simplify right side
   2,111.68x = 4,360,887.77
5. Step 5: Solve for x
   x = 4,360,887.77/2,111.68
6. Step 6: Final answer
   x = 2,065.13