Finding the Fourth Proportional to 1,419.44, 1,958.96 and 790.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.44 : 1,958.96 = 790.10 : x
2. Step 2: Convert to fraction form
   1,419.44/1,958.96 = 790.10/x
3. Step 3: Cross multiply
   1,419.44x = 1,958.96 × 790.10
4. Step 4: Simplify right side
   1,419.44x = 1,547,760.55
5. Step 5: Solve for x
   x = 1,547,760.55/1,419.44
6. Step 6: Final answer
   x = 1,090.40