Finding the Fourth Proportional to 2,624.79, 3,937.18 and 1,800.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.79 : 3,937.18 = 1,800.55 : x
2. Step 2: Convert to fraction form
   2,624.79/3,937.18 = 1,800.55/x
3. Step 3: Cross multiply
   2,624.79x = 3,937.18 × 1,800.55
4. Step 4: Simplify right side
   2,624.79x = 7,089,089.45
5. Step 5: Solve for x
   x = 7,089,089.45/2,624.79
6. Step 6: Final answer
   x = 2,700.82