Finding the Fourth Proportional to 2,020.10, 2,787.89 and 1,135.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.10 : 2,787.89 = 1,135.98 : x
2. Step 2: Convert to fraction form
   2,020.10/2,787.89 = 1,135.98/x
3. Step 3: Cross multiply
   2,020.10x = 2,787.89 × 1,135.98
4. Step 4: Simplify right side
   2,020.10x = 3,166,981.60
5. Step 5: Solve for x
   x = 3,166,981.60/2,020.10
6. Step 6: Final answer
   x = 1,567.74