Finding the Fourth Proportional to 1,667.10, 2,498.73 and 801.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.10 : 2,498.73 = 801.18 : x
2. Step 2: Convert to fraction form
   1,667.10/2,498.73 = 801.18/x
3. Step 3: Cross multiply
   1,667.10x = 2,498.73 × 801.18
4. Step 4: Simplify right side
   1,667.10x = 2,001,932.50
5. Step 5: Solve for x
   x = 2,001,932.50/1,667.10
6. Step 6: Final answer
   x = 1,200.85