Finding the Fourth Proportional to 2,085.86, 3,128.25 and 625.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.86 : 3,128.25 = 625.16 : x
2. Step 2: Convert to fraction form
   2,085.86/3,128.25 = 625.16/x
3. Step 3: Cross multiply
   2,085.86x = 3,128.25 × 625.16
4. Step 4: Simplify right side
   2,085.86x = 1,955,656.77
5. Step 5: Solve for x
   x = 1,955,656.77/2,085.86
6. Step 6: Final answer
   x = 937.58