Finding the Fourth Proportional to 2,003.58, 3,005.10 and 1,212.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.58 : 3,005.10 = 1,212.48 : x
2. Step 2: Convert to fraction form
   2,003.58/3,005.10 = 1,212.48/x
3. Step 3: Cross multiply
   2,003.58x = 3,005.10 × 1,212.48
4. Step 4: Simplify right side
   2,003.58x = 3,643,623.65
5. Step 5: Solve for x
   x = 3,643,623.65/2,003.58
6. Step 6: Final answer
   x = 1,818.56