Finding the Fourth Proportional to 2,659.92, 3,671.04 and 1,916.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.92 : 3,671.04 = 1,916.32 : x
2. Step 2: Convert to fraction form
   2,659.92/3,671.04 = 1,916.32/x
3. Step 3: Cross multiply
   2,659.92x = 3,671.04 × 1,916.32
4. Step 4: Simplify right side
   2,659.92x = 7,034,887.37
5. Step 5: Solve for x
   x = 7,034,887.37/2,659.92
6. Step 6: Final answer
   x = 2,644.77