Finding the Fourth Proportional to 1,919.89, 2,876.05 and 1,784.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.89 : 2,876.05 = 1,784.89 : x
2. Step 2: Convert to fraction form
   1,919.89/2,876.05 = 1,784.89/x
3. Step 3: Cross multiply
   1,919.89x = 2,876.05 × 1,784.89
4. Step 4: Simplify right side
   1,919.89x = 5,133,432.88
5. Step 5: Solve for x
   x = 5,133,432.88/1,919.89
6. Step 6: Final answer
   x = 2,673.82