Finding the Fourth Proportional to 2,111.58, 2,910.87 and 1,717.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.58 : 2,910.87 = 1,717.92 : x
2. Step 2: Convert to fraction form
   2,111.58/2,910.87 = 1,717.92/x
3. Step 3: Cross multiply
   2,111.58x = 2,910.87 × 1,717.92
4. Step 4: Simplify right side
   2,111.58x = 5,000,641.79
5. Step 5: Solve for x
   x = 5,000,641.79/2,111.58
6. Step 6: Final answer
   x = 2,368.20