Finding the Fourth Proportional to 2,061.84, 3,091.32 and 1,020.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.84 : 3,091.32 = 1,020.57 : x
2. Step 2: Convert to fraction form
   2,061.84/3,091.32 = 1,020.57/x
3. Step 3: Cross multiply
   2,061.84x = 3,091.32 × 1,020.57
4. Step 4: Simplify right side
   2,061.84x = 3,154,908.45
5. Step 5: Solve for x
   x = 3,154,908.45/2,061.84
6. Step 6: Final answer
   x = 1,530.14