Finding the Fourth Proportional to 2,086.06, 3,128.52 and 625.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.06 : 3,128.52 = 625.30 : x
2. Step 2: Convert to fraction form
   2,086.06/3,128.52 = 625.30/x
3. Step 3: Cross multiply
   2,086.06x = 3,128.52 × 625.30
4. Step 4: Simplify right side
   2,086.06x = 1,956,263.56
5. Step 5: Solve for x
   x = 1,956,263.56/2,086.06
6. Step 6: Final answer
   x = 937.78