Finding the Fourth Proportional to 1,145.29, 1,716.15 and 885.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.29 : 1,716.15 = 885.93 : x
2. Step 2: Convert to fraction form
   1,145.29/1,716.15 = 885.93/x
3. Step 3: Cross multiply
   1,145.29x = 1,716.15 × 885.93
4. Step 4: Simplify right side
   1,145.29x = 1,520,388.77
5. Step 5: Solve for x
   x = 1,520,388.77/1,145.29
6. Step 6: Final answer
   x = 1,327.51