Finding the Fourth Proportional to 1,411.78, 2,114.85 and 1,296.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.78 : 2,114.85 = 1,296.96 : x
2. Step 2: Convert to fraction form
   1,411.78/2,114.85 = 1,296.96/x
3. Step 3: Cross multiply
   1,411.78x = 2,114.85 × 1,296.96
4. Step 4: Simplify right side
   1,411.78x = 2,742,875.86
5. Step 5: Solve for x
   x = 2,742,875.86/1,411.78
6. Step 6: Final answer
   x = 1,942.85