Finding the Fourth Proportional to 1,790.37, 2,685.69 and 557.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,790.37 : 2,685.69 = 557.82 : x
2. Step 2: Convert to fraction form
   1,790.37/2,685.69 = 557.82/x
3. Step 3: Cross multiply
   1,790.37x = 2,685.69 × 557.82
4. Step 4: Simplify right side
   1,790.37x = 1,498,131.60
5. Step 5: Solve for x
   x = 1,498,131.60/1,790.37
6. Step 6: Final answer
   x = 836.77