Finding the Fourth Proportional to 1,407.57, 1,942.07 and 910.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.57 : 1,942.07 = 910.32 : x
2. Step 2: Convert to fraction form
   1,407.57/1,942.07 = 910.32/x
3. Step 3: Cross multiply
   1,407.57x = 1,942.07 × 910.32
4. Step 4: Simplify right side
   1,407.57x = 1,767,900.61
5. Step 5: Solve for x
   x = 1,767,900.61/1,407.57
6. Step 6: Final answer
   x = 1,255.99