Finding the Fourth Proportional to 1,419.65, 1,958.94 and 790.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.65 : 1,958.94 = 790.02 : x
2. Step 2: Convert to fraction form
   1,419.65/1,958.94 = 790.02/x
3. Step 3: Cross multiply
   1,419.65x = 1,958.94 × 790.02
4. Step 4: Simplify right side
   1,419.65x = 1,547,601.78
5. Step 5: Solve for x
   x = 1,547,601.78/1,419.65
6. Step 6: Final answer
   x = 1,090.13