Finding the Fourth Proportional to 2,340.91, 3,511.82 and 1,109.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340.91 : 3,511.82 = 1,109.71 : x
2. Step 2: Convert to fraction form
   2,340.91/3,511.82 = 1,109.71/x
3. Step 3: Cross multiply
   2,340.91x = 3,511.82 × 1,109.71
4. Step 4: Simplify right side
   2,340.91x = 3,897,101.77
5. Step 5: Solve for x
   x = 3,897,101.77/2,340.91
6. Step 6: Final answer
   x = 1,664.78