Finding the Fourth Proportional to 1,419.59, 1,959.08 and 790.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.59 : 1,959.08 = 790.09 : x
2. Step 2: Convert to fraction form
   1,419.59/1,959.08 = 790.09/x
3. Step 3: Cross multiply
   1,419.59x = 1,959.08 × 790.09
4. Step 4: Simplify right side
   1,419.59x = 1,547,839.72
5. Step 5: Solve for x
   x = 1,547,839.72/1,419.59
6. Step 6: Final answer
   x = 1,090.35