Finding the Fourth Proportional to 1,499.37, 2,245.97 and 881.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.37 : 2,245.97 = 881.21 : x
2. Step 2: Convert to fraction form
   1,499.37/2,245.97 = 881.21/x
3. Step 3: Cross multiply
   1,499.37x = 2,245.97 × 881.21
4. Step 4: Simplify right side
   1,499.37x = 1,979,155.59
5. Step 5: Solve for x
   x = 1,979,155.59/1,499.37
6. Step 6: Final answer
   x = 1,319.99