Finding the Fourth Proportional to 802.89, 1,196.72 and 743.71

Step by Step Solution

1. Step 1: Write the proportion equation
   802.89 : 1,196.72 = 743.71 : x
2. Step 2: Convert to fraction form
   802.89/1,196.72 = 743.71/x
3. Step 3: Cross multiply
   802.89x = 1,196.72 × 743.71
4. Step 4: Simplify right side
   802.89x = 890,009.25
5. Step 5: Solve for x
   x = 890,009.25/802.89
6. Step 6: Final answer
   x = 1,108.51