Finding the Fourth Proportional to 1,458.68, 2,185.86 and 1,422.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,458.68 : 2,185.86 = 1,422.46 : x
2. Step 2: Convert to fraction form
   1,458.68/2,185.86 = 1,422.46/x
3. Step 3: Cross multiply
   1,458.68x = 2,185.86 × 1,422.46
4. Step 4: Simplify right side
   1,458.68x = 3,109,302.48
5. Step 5: Solve for x
   x = 3,109,302.48/1,458.68
6. Step 6: Final answer
   x = 2,131.58