Finding the Fourth Proportional to 1,320.83, 1,980.59 and 704.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.83 : 1,980.59 = 704.37 : x
2. Step 2: Convert to fraction form
   1,320.83/1,980.59 = 704.37/x
3. Step 3: Cross multiply
   1,320.83x = 1,980.59 × 704.37
4. Step 4: Simplify right side
   1,320.83x = 1,395,064.66
5. Step 5: Solve for x
   x = 1,395,064.66/1,320.83
6. Step 6: Final answer
   x = 1,056.21