Finding the Fourth Proportional to 2,210.43, 3,050.40 and 1,215.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.43 : 3,050.40 = 1,215.81 : x
2. Step 2: Convert to fraction form
   2,210.43/3,050.40 = 1,215.81/x
3. Step 3: Cross multiply
   2,210.43x = 3,050.40 × 1,215.81
4. Step 4: Simplify right side
   2,210.43x = 3,708,706.82
5. Step 5: Solve for x
   x = 3,708,706.82/2,210.43
6. Step 6: Final answer
   x = 1,677.82