Finding the Fourth Proportional to 2,118.69, 2,923.16 and 1,371.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.69 : 2,923.16 = 1,371.47 : x
2. Step 2: Convert to fraction form
   2,118.69/2,923.16 = 1,371.47/x
3. Step 3: Cross multiply
   2,118.69x = 2,923.16 × 1,371.47
4. Step 4: Simplify right side
   2,118.69x = 4,009,004.77
5. Step 5: Solve for x
   x = 4,009,004.77/2,118.69
6. Step 6: Final answer
   x = 1,892.21