Finding the Fourth Proportional to 2,146.60, 2,959.96 and 1,864.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.60 : 2,959.96 = 1,864.34 : x
2. Step 2: Convert to fraction form
   2,146.60/2,959.96 = 1,864.34/x
3. Step 3: Cross multiply
   2,146.60x = 2,959.96 × 1,864.34
4. Step 4: Simplify right side
   2,146.60x = 5,518,371.83
5. Step 5: Solve for x
   x = 5,518,371.83/2,146.60
6. Step 6: Final answer
   x = 2,570.75