Finding the Fourth Proportional to 1,456.67, 2,188.58 and 936.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.67 : 2,188.58 = 936.87 : x
2. Step 2: Convert to fraction form
   1,456.67/2,188.58 = 936.87/x
3. Step 3: Cross multiply
   1,456.67x = 2,188.58 × 936.87
4. Step 4: Simplify right side
   1,456.67x = 2,050,410.26
5. Step 5: Solve for x
   x = 2,050,410.26/1,456.67
6. Step 6: Final answer
   x = 1,407.61