Finding the Fourth Proportional to 3,346.78, 5,019.72 and 881.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,346.78 : 5,019.72 = 881.80 : x
2. Step 2: Convert to fraction form
   3,346.78/5,019.72 = 881.80/x
3. Step 3: Cross multiply
   3,346.78x = 5,019.72 × 881.80
4. Step 4: Simplify right side
   3,346.78x = 4,426,389.10
5. Step 5: Solve for x
   x = 4,426,389.10/3,346.78
6. Step 6: Final answer
   x = 1,322.58