Finding the Fourth Proportional to 1,918.39, 2,648.50 and 1,807.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918.39 : 2,648.50 = 1,807.67 : x
2. Step 2: Convert to fraction form
   1,918.39/2,648.50 = 1,807.67/x
3. Step 3: Cross multiply
   1,918.39x = 2,648.50 × 1,807.67
4. Step 4: Simplify right side
   1,918.39x = 4,787,614.00
5. Step 5: Solve for x
   x = 4,787,614.00/1,918.39
6. Step 6: Final answer
   x = 2,495.65