Finding the Fourth Proportional to 2,635.47, 3,953.81 and 880.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.47 : 3,953.81 = 880.34 : x
2. Step 2: Convert to fraction form
   2,635.47/3,953.81 = 880.34/x
3. Step 3: Cross multiply
   2,635.47x = 3,953.81 × 880.34
4. Step 4: Simplify right side
   2,635.47x = 3,480,697.10
5. Step 5: Solve for x
   x = 3,480,697.10/2,635.47
6. Step 6: Final answer
   x = 1,320.71