Finding the Fourth Proportional to 2,880.35, 3,974.82 and 1,761.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,880.35 : 3,974.82 = 1,761.30 : x
2. Step 2: Convert to fraction form
   2,880.35/3,974.82 = 1,761.30/x
3. Step 3: Cross multiply
   2,880.35x = 3,974.82 × 1,761.30
4. Step 4: Simplify right side
   2,880.35x = 7,000,843.86
5. Step 5: Solve for x
   x = 7,000,843.86/2,880.35
6. Step 6: Final answer
   x = 2,430.55