Finding the Fourth Proportional to 1,004.88, 1,387.59 and 632.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,004.88 : 1,387.59 = 632.49 : x
2. Step 2: Convert to fraction form
   1,004.88/1,387.59 = 632.49/x
3. Step 3: Cross multiply
   1,004.88x = 1,387.59 × 632.49
4. Step 4: Simplify right side
   1,004.88x = 877,636.80
5. Step 5: Solve for x
   x = 877,636.80/1,004.88
6. Step 6: Final answer
   x = 873.37