Finding the Fourth Proportional to 1,802.32, 2,487.60 and 1,171.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.32 : 2,487.60 = 1,171.75 : x
2. Step 2: Convert to fraction form
   1,802.32/2,487.60 = 1,171.75/x
3. Step 3: Cross multiply
   1,802.32x = 2,487.60 × 1,171.75
4. Step 4: Simplify right side
   1,802.32x = 2,914,834.69
5. Step 5: Solve for x
   x = 2,914,834.69/1,802.32
6. Step 6: Final answer
   x = 1,617.27