Finding the Fourth Proportional to 1,667.01, 2,501.10 and 1,205.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.01 : 2,501.10 = 1,205.31 : x
2. Step 2: Convert to fraction form
   1,667.01/2,501.10 = 1,205.31/x
3. Step 3: Cross multiply
   1,667.01x = 2,501.10 × 1,205.31
4. Step 4: Simplify right side
   1,667.01x = 3,014,600.84
5. Step 5: Solve for x
   x = 3,014,600.84/1,667.01
6. Step 6: Final answer
   x = 1,808.39