Finding the Fourth Proportional to 1,415.46, 2,111.82 and 1,259.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,415.46 : 2,111.82 = 1,259.52 : x
2. Step 2: Convert to fraction form
   1,415.46/2,111.82 = 1,259.52/x
3. Step 3: Cross multiply
   1,415.46x = 2,111.82 × 1,259.52
4. Step 4: Simplify right side
   1,415.46x = 2,659,879.53
5. Step 5: Solve for x
   x = 2,659,879.53/1,415.46
6. Step 6: Final answer
   x = 1,879.16