Finding the Fourth Proportional to 1,426.87, 1,967.25 and 1,191.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.87 : 1,967.25 = 1,191.16 : x
2. Step 2: Convert to fraction form
   1,426.87/1,967.25 = 1,191.16/x
3. Step 3: Cross multiply
   1,426.87x = 1,967.25 × 1,191.16
4. Step 4: Simplify right side
   1,426.87x = 2,343,309.51
5. Step 5: Solve for x
   x = 2,343,309.51/1,426.87
6. Step 6: Final answer
   x = 1,642.27