Finding the Fourth Proportional to 1,892.28, 2,839.20 and 738.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.28 : 2,839.20 = 738.84 : x
2. Step 2: Convert to fraction form
   1,892.28/2,839.20 = 738.84/x
3. Step 3: Cross multiply
   1,892.28x = 2,839.20 × 738.84
4. Step 4: Simplify right side
   1,892.28x = 2,097,714.53
5. Step 5: Solve for x
   x = 2,097,714.53/1,892.28
6. Step 6: Final answer
   x = 1,108.56