Finding the Fourth Proportional to 4,978.56, 7,466.88 and 1,815.84

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.56 : 7,466.88 = 1,815.84 : x
2. Step 2: Convert to fraction form
   4,978.56/7,466.88 = 1,815.84/x
3. Step 3: Cross multiply
   4,978.56x = 7,466.88 × 1,815.84
4. Step 4: Simplify right side
   4,978.56x = 13,558,659.38
5. Step 5: Solve for x
   x = 13,558,659.38/4,978.56
6. Step 6: Final answer
   x = 2,723.41