Finding the Fourth Proportional to 2,326.51, 3,210.61 and 1,278.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,326.51 : 3,210.61 = 1,278.56 : x
2. Step 2: Convert to fraction form
   2,326.51/3,210.61 = 1,278.56/x
3. Step 3: Cross multiply
   2,326.51x = 3,210.61 × 1,278.56
4. Step 4: Simplify right side
   2,326.51x = 4,104,967.15
5. Step 5: Solve for x
   x = 4,104,967.15/2,326.51
6. Step 6: Final answer
   x = 1,764.43