Finding the Fourth Proportional to 2,119.07, 2,922.71 and 1,856.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.07 : 2,922.71 = 1,856.63 : x
2. Step 2: Convert to fraction form
   2,119.07/2,922.71 = 1,856.63/x
3. Step 3: Cross multiply
   2,119.07x = 2,922.71 × 1,856.63
4. Step 4: Simplify right side
   2,119.07x = 5,426,403.02
5. Step 5: Solve for x
   x = 5,426,403.02/2,119.07
6. Step 6: Final answer
   x = 2,560.74