Finding the Fourth Proportional to 1,665.86, 2,495.61 and 933.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.86 : 2,495.61 = 933.22 : x
2. Step 2: Convert to fraction form
   1,665.86/2,495.61 = 933.22/x
3. Step 3: Cross multiply
   1,665.86x = 2,495.61 × 933.22
4. Step 4: Simplify right side
   1,665.86x = 2,328,953.16
5. Step 5: Solve for x
   x = 2,328,953.16/1,665.86
6. Step 6: Final answer
   x = 1,398.05