Finding the Fourth Proportional to 1,665.83, 2,498.78 and 933.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.83 : 2,498.78 = 933.80 : x
2. Step 2: Convert to fraction form
   1,665.83/2,498.78 = 933.80/x
3. Step 3: Cross multiply
   1,665.83x = 2,498.78 × 933.80
4. Step 4: Simplify right side
   1,665.83x = 2,333,350.60
5. Step 5: Solve for x
   x = 2,333,350.60/1,665.83
6. Step 6: Final answer
   x = 1,400.71