Finding the Fourth Proportional to 1,442.61, 2,151.77 and 1,208.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.61 : 2,151.77 = 1,208.79 : x
2. Step 2: Convert to fraction form
   1,442.61/2,151.77 = 1,208.79/x
3. Step 3: Cross multiply
   1,442.61x = 2,151.77 × 1,208.79
4. Step 4: Simplify right side
   1,442.61x = 2,601,032.01
5. Step 5: Solve for x
   x = 2,601,032.01/1,442.61
6. Step 6: Final answer
   x = 1,803.00