Finding the Fourth Proportional to 1,439.83, 2,157.96 and 746.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439.83 : 2,157.96 = 746.09 : x
2. Step 2: Convert to fraction form
   1,439.83/2,157.96 = 746.09/x
3. Step 3: Cross multiply
   1,439.83x = 2,157.96 × 746.09
4. Step 4: Simplify right side
   1,439.83x = 1,610,040.42
5. Step 5: Solve for x
   x = 1,610,040.42/1,439.83
6. Step 6: Final answer
   x = 1,118.22