Finding the Fourth Proportional to 1,690.31, 2,332.72 and 944.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690.31 : 2,332.72 = 944.27 : x
2. Step 2: Convert to fraction form
   1,690.31/2,332.72 = 944.27/x
3. Step 3: Cross multiply
   1,690.31x = 2,332.72 × 944.27
4. Step 4: Simplify right side
   1,690.31x = 2,202,717.51
5. Step 5: Solve for x
   x = 2,202,717.51/1,690.31
6. Step 6: Final answer
   x = 1,303.14