Finding the Fourth Proportional to 2,167.01, 3,248.53 and 780.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167.01 : 3,248.53 = 780.03 : x
2. Step 2: Convert to fraction form
   2,167.01/3,248.53 = 780.03/x
3. Step 3: Cross multiply
   2,167.01x = 3,248.53 × 780.03
4. Step 4: Simplify right side
   2,167.01x = 2,533,947.69
5. Step 5: Solve for x
   x = 2,533,947.69/2,167.01
6. Step 6: Final answer
   x = 1,169.33