Finding the Fourth Proportional to 1,422.06, 1,962.48 and 1,072.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.06 : 1,962.48 = 1,072.14 : x
2. Step 2: Convert to fraction form
   1,422.06/1,962.48 = 1,072.14/x
3. Step 3: Cross multiply
   1,422.06x = 1,962.48 × 1,072.14
4. Step 4: Simplify right side
   1,422.06x = 2,104,053.31
5. Step 5: Solve for x
   x = 2,104,053.31/1,422.06
6. Step 6: Final answer
   x = 1,479.58