Finding the Fourth Proportional to 2,109.77, 3,168.30 and 1,292.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.77 : 3,168.30 = 1,292.84 : x
2. Step 2: Convert to fraction form
   2,109.77/3,168.30 = 1,292.84/x
3. Step 3: Cross multiply
   2,109.77x = 3,168.30 × 1,292.84
4. Step 4: Simplify right side
   2,109.77x = 4,096,095.13
5. Step 5: Solve for x
   x = 4,096,095.13/2,109.77
6. Step 6: Final answer
   x = 1,941.49