Finding the Fourth Proportional to 1,064.83, 1,598 and 790.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.83 : 1,598 = 790.09 : x
2. Step 2: Convert to fraction form
   1,064.83/1,598 = 790.09/x
3. Step 3: Cross multiply
   1,064.83x = 1,598 × 790.09
4. Step 4: Simplify right side
   1,064.83x = 1,262,563.82
5. Step 5: Solve for x
   x = 1,262,563.82/1,064.83
6. Step 6: Final answer
   x = 1,185.70