Finding the Fourth Proportional to 2,887.47, 3,983.31 and 1,892.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,887.47 : 3,983.31 = 1,892.79 : x
2. Step 2: Convert to fraction form
   2,887.47/3,983.31 = 1,892.79/x
3. Step 3: Cross multiply
   2,887.47x = 3,983.31 × 1,892.79
4. Step 4: Simplify right side
   2,887.47x = 7,539,569.33
5. Step 5: Solve for x
   x = 7,539,569.33/2,887.47
6. Step 6: Final answer
   x = 2,611.13