Finding the Fourth Proportional to 2,113.98, 2,917.40 and 1,169.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.98 : 2,917.40 = 1,169.77 : x
2. Step 2: Convert to fraction form
   2,113.98/2,917.40 = 1,169.77/x
3. Step 3: Cross multiply
   2,113.98x = 2,917.40 × 1,169.77
4. Step 4: Simplify right side
   2,113.98x = 3,412,673.86
5. Step 5: Solve for x
   x = 3,412,673.86/2,113.98
6. Step 6: Final answer
   x = 1,614.34