Finding the Fourth Proportional to 1,411.10, 1,936.23 and 1,386.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.10 : 1,936.23 = 1,386.50 : x
2. Step 2: Convert to fraction form
   1,411.10/1,936.23 = 1,386.50/x
3. Step 3: Cross multiply
   1,411.10x = 1,936.23 × 1,386.50
4. Step 4: Simplify right side
   1,411.10x = 2,684,582.90
5. Step 5: Solve for x
   x = 2,684,582.90/1,411.10
6. Step 6: Final answer
   x = 1,902.48