Finding the Fourth Proportional to 1,636.88, 2,460.78 and 1,153.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636.88 : 2,460.78 = 1,153.31 : x
2. Step 2: Convert to fraction form
   1,636.88/2,460.78 = 1,153.31/x
3. Step 3: Cross multiply
   1,636.88x = 2,460.78 × 1,153.31
4. Step 4: Simplify right side
   1,636.88x = 2,838,029.88
5. Step 5: Solve for x
   x = 2,838,029.88/1,636.88
6. Step 6: Final answer
   x = 1,733.81