Finding the Fourth Proportional to 2,139.33, 3,210.03 and 970.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.33 : 3,210.03 = 970.14 : x
2. Step 2: Convert to fraction form
   2,139.33/3,210.03 = 970.14/x
3. Step 3: Cross multiply
   2,139.33x = 3,210.03 × 970.14
4. Step 4: Simplify right side
   2,139.33x = 3,114,178.50
5. Step 5: Solve for x
   x = 3,114,178.50/2,139.33
6. Step 6: Final answer
   x = 1,455.68