Finding the Fourth Proportional to 2,615.34, 3,920.52 and 970.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.34 : 3,920.52 = 970.76 : x
2. Step 2: Convert to fraction form
   2,615.34/3,920.52 = 970.76/x
3. Step 3: Cross multiply
   2,615.34x = 3,920.52 × 970.76
4. Step 4: Simplify right side
   2,615.34x = 3,805,884.00
5. Step 5: Solve for x
   x = 3,805,884.00/2,615.34
6. Step 6: Final answer
   x = 1,455.22