Finding the Fourth Proportional to 1,422.32, 1,971.90 and 1,348.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.32 : 1,971.90 = 1,348.48 : x
2. Step 2: Convert to fraction form
   1,422.32/1,971.90 = 1,348.48/x
3. Step 3: Cross multiply
   1,422.32x = 1,971.90 × 1,348.48
4. Step 4: Simplify right side
   1,422.32x = 2,659,067.71
5. Step 5: Solve for x
   x = 2,659,067.71/1,422.32
6. Step 6: Final answer
   x = 1,869.53