Finding the Fourth Proportional to 2,980.69, 4,471.06 and 900.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,980.69 : 4,471.06 = 900.71 : x
2. Step 2: Convert to fraction form
   2,980.69/4,471.06 = 900.71/x
3. Step 3: Cross multiply
   2,980.69x = 4,471.06 × 900.71
4. Step 4: Simplify right side
   2,980.69x = 4,027,113.92
5. Step 5: Solve for x
   x = 4,027,113.92/2,980.69
6. Step 6: Final answer
   x = 1,351.07