Finding the Fourth Proportional to 1,407.58, 2,107.72 and 970.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.58 : 2,107.72 = 970.18 : x
2. Step 2: Convert to fraction form
   1,407.58/2,107.72 = 970.18/x
3. Step 3: Cross multiply
   1,407.58x = 2,107.72 × 970.18
4. Step 4: Simplify right side
   1,407.58x = 2,044,863.73
5. Step 5: Solve for x
   x = 2,044,863.73/1,407.58
6. Step 6: Final answer
   x = 1,452.75