Finding the Fourth Proportional to 1,799.31, 2,699.12 and 703.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,799.31 : 2,699.12 = 703.69 : x
2. Step 2: Convert to fraction form
   1,799.31/2,699.12 = 703.69/x
3. Step 3: Cross multiply
   1,799.31x = 2,699.12 × 703.69
4. Step 4: Simplify right side
   1,799.31x = 1,899,338.76
5. Step 5: Solve for x
   x = 1,899,338.76/1,799.31
6. Step 6: Final answer
   x = 1,055.59