Finding the Fourth Proportional to 2,061.57, 2,844.90 and 1,210.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.57 : 2,844.90 = 1,210.81 : x
2. Step 2: Convert to fraction form
   2,061.57/2,844.90 = 1,210.81/x
3. Step 3: Cross multiply
   2,061.57x = 2,844.90 × 1,210.81
4. Step 4: Simplify right side
   2,061.57x = 3,444,622.17
5. Step 5: Solve for x
   x = 3,444,622.17/2,061.57
6. Step 6: Final answer
   x = 1,670.88