Finding the Fourth Proportional to 2,042.15, 2,820.49 and 1,377.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.15 : 2,820.49 = 1,377.84 : x
2. Step 2: Convert to fraction form
   2,042.15/2,820.49 = 1,377.84/x
3. Step 3: Cross multiply
   2,042.15x = 2,820.49 × 1,377.84
4. Step 4: Simplify right side
   2,042.15x = 3,886,191.07
5. Step 5: Solve for x
   x = 3,886,191.07/2,042.15
6. Step 6: Final answer
   x = 1,902.99