Finding the Fourth Proportional to 1,845.12, 2,766.72 and 748.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,845.12 : 2,766.72 = 748.86 : x
2. Step 2: Convert to fraction form
   1,845.12/2,766.72 = 748.86/x
3. Step 3: Cross multiply
   1,845.12x = 2,766.72 × 748.86
4. Step 4: Simplify right side
   1,845.12x = 2,071,885.94
5. Step 5: Solve for x
   x = 2,071,885.94/1,845.12
6. Step 6: Final answer
   x = 1,122.90