Finding the Fourth Proportional to 1,254.69, 1,878.51 and 637.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,254.69 : 1,878.51 = 637.10 : x
2. Step 2: Convert to fraction form
   1,254.69/1,878.51 = 637.10/x
3. Step 3: Cross multiply
   1,254.69x = 1,878.51 × 637.10
4. Step 4: Simplify right side
   1,254.69x = 1,196,789.33
5. Step 5: Solve for x
   x = 1,196,789.33/1,254.69
6. Step 6: Final answer
   x = 953.85