Finding the Fourth Proportional to 1,859.31, 2,561.72 and 1,268.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,859.31 : 2,561.72 = 1,268.82 : x
2. Step 2: Convert to fraction form
   1,859.31/2,561.72 = 1,268.82/x
3. Step 3: Cross multiply
   1,859.31x = 2,561.72 × 1,268.82
4. Step 4: Simplify right side
   1,859.31x = 3,250,355.23
5. Step 5: Solve for x
   x = 3,250,355.23/1,859.31
6. Step 6: Final answer
   x = 1,748.15