Finding the Fourth Proportional to 1,009.94, 1,514.71 and 424.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009.94 : 1,514.71 = 424.93 : x
2. Step 2: Convert to fraction form
   1,009.94/1,514.71 = 424.93/x
3. Step 3: Cross multiply
   1,009.94x = 1,514.71 × 424.93
4. Step 4: Simplify right side
   1,009.94x = 643,645.72
5. Step 5: Solve for x
   x = 643,645.72/1,009.94
6. Step 6: Final answer
   x = 637.31