Finding the Fourth Proportional to 1,254.05, 1,870.86 and 1,221.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,254.05 : 1,870.86 = 1,221.83 : x
2. Step 2: Convert to fraction form
   1,254.05/1,870.86 = 1,221.83/x
3. Step 3: Cross multiply
   1,254.05x = 1,870.86 × 1,221.83
4. Step 4: Simplify right side
   1,254.05x = 2,285,863.52
5. Step 5: Solve for x
   x = 2,285,863.52/1,254.05
6. Step 6: Final answer
   x = 1,822.79