Finding the Fourth Proportional to 2,645.88, 3,968.48 and 1,458.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645.88 : 3,968.48 = 1,458.76 : x
2. Step 2: Convert to fraction form
   2,645.88/3,968.48 = 1,458.76/x
3. Step 3: Cross multiply
   2,645.88x = 3,968.48 × 1,458.76
4. Step 4: Simplify right side
   2,645.88x = 5,789,053.61
5. Step 5: Solve for x
   x = 5,789,053.61/2,645.88
6. Step 6: Final answer
   x = 2,187.95