Finding the Fourth Proportional to 2,930.76, 4,393.71 and 1,080.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,930.76 : 4,393.71 = 1,080.81 : x
2. Step 2: Convert to fraction form
   2,930.76/4,393.71 = 1,080.81/x
3. Step 3: Cross multiply
   2,930.76x = 4,393.71 × 1,080.81
4. Step 4: Simplify right side
   2,930.76x = 4,748,765.71
5. Step 5: Solve for x
   x = 4,748,765.71/2,930.76
6. Step 6: Final answer
   x = 1,620.32