Finding the Fourth Proportional to 2,887.47, 3,984.72 and 1,628.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,887.47 : 3,984.72 = 1,628.48 : x
2. Step 2: Convert to fraction form
   2,887.47/3,984.72 = 1,628.48/x
3. Step 3: Cross multiply
   2,887.47x = 3,984.72 × 1,628.48
4. Step 4: Simplify right side
   2,887.47x = 6,489,036.83
5. Step 5: Solve for x
   x = 6,489,036.83/2,887.47
6. Step 6: Final answer
   x = 2,247.31