Finding the Fourth Proportional to 1,025.49, 1,421.69 and 970.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025.49 : 1,421.69 = 970.08 : x
2. Step 2: Convert to fraction form
   1,025.49/1,421.69 = 970.08/x
3. Step 3: Cross multiply
   1,025.49x = 1,421.69 × 970.08
4. Step 4: Simplify right side
   1,025.49x = 1,379,142.85
5. Step 5: Solve for x
   x = 1,379,142.85/1,025.49
6. Step 6: Final answer
   x = 1,344.86