Finding the Fourth Proportional to 2,636.10, 3,640.50 and 1,848.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.10 : 3,640.50 = 1,848.78 : x
2. Step 2: Convert to fraction form
   2,636.10/3,640.50 = 1,848.78/x
3. Step 3: Cross multiply
   2,636.10x = 3,640.50 × 1,848.78
4. Step 4: Simplify right side
   2,636.10x = 6,730,483.59
5. Step 5: Solve for x
   x = 6,730,483.59/2,636.10
6. Step 6: Final answer
   x = 2,553.20