Finding the Fourth Proportional to 4,740.76, 7,111.55 and 1,230.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,740.76 : 7,111.55 = 1,230.72 : x
2. Step 2: Convert to fraction form
   4,740.76/7,111.55 = 1,230.72/x
3. Step 3: Cross multiply
   4,740.76x = 7,111.55 × 1,230.72
4. Step 4: Simplify right side
   4,740.76x = 8,752,326.82
5. Step 5: Solve for x
   x = 8,752,326.82/4,740.76
6. Step 6: Final answer
   x = 1,846.19