Finding the Fourth Proportional to 1,685.32, 2,528.94 and 955.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.32 : 2,528.94 = 955.72 : x
2. Step 2: Convert to fraction form
   1,685.32/2,528.94 = 955.72/x
3. Step 3: Cross multiply
   1,685.32x = 2,528.94 × 955.72
4. Step 4: Simplify right side
   1,685.32x = 2,416,958.54
5. Step 5: Solve for x
   x = 2,416,958.54/1,685.32
6. Step 6: Final answer
   x = 1,434.12