Finding the Fourth Proportional to 3,601.90, 5,399.61 and 1,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,601.90 : 5,399.61 = 1,868.50 : x
2. Step 2: Convert to fraction form
   3,601.90/5,399.61 = 1,868.50/x
3. Step 3: Cross multiply
   3,601.90x = 5,399.61 × 1,868.50
4. Step 4: Simplify right side
   3,601.90x = 10,089,171.29
5. Step 5: Solve for x
   x = 10,089,171.29/3,601.90
6. Step 6: Final answer
   x = 2,801.07