Finding the Fourth Proportional to 2,209.01, 3,048.54 and 1,312.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.01 : 3,048.54 = 1,312.81 : x
2. Step 2: Convert to fraction form
   2,209.01/3,048.54 = 1,312.81/x
3. Step 3: Cross multiply
   2,209.01x = 3,048.54 × 1,312.81
4. Step 4: Simplify right side
   2,209.01x = 4,002,141.25
5. Step 5: Solve for x
   x = 4,002,141.25/2,209.01
6. Step 6: Final answer
   x = 1,811.74