Finding the Fourth Proportional to 1,955.12, 2,930.61 and 980.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,955.12 : 2,930.61 = 980.69 : x
2. Step 2: Convert to fraction form
   1,955.12/2,930.61 = 980.69/x
3. Step 3: Cross multiply
   1,955.12x = 2,930.61 × 980.69
4. Step 4: Simplify right side
   1,955.12x = 2,874,019.92
5. Step 5: Solve for x
   x = 2,874,019.92/1,955.12
6. Step 6: Final answer
   x = 1,470.00