Finding the Fourth Proportional to 2,613.08, 3,920.16 and 881.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.08 : 3,920.16 = 881.84 : x
2. Step 2: Convert to fraction form
   2,613.08/3,920.16 = 881.84/x
3. Step 3: Cross multiply
   2,613.08x = 3,920.16 × 881.84
4. Step 4: Simplify right side
   2,613.08x = 3,456,953.89
5. Step 5: Solve for x
   x = 3,456,953.89/2,613.08
6. Step 6: Final answer
   x = 1,322.94