Finding the Fourth Proportional to 1,426.40, 1,967.88 and 1,054.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.40 : 1,967.88 = 1,054.26 : x
2. Step 2: Convert to fraction form
   1,426.40/1,967.88 = 1,054.26/x
3. Step 3: Cross multiply
   1,426.40x = 1,967.88 × 1,054.26
4. Step 4: Simplify right side
   1,426.40x = 2,074,657.17
5. Step 5: Solve for x
   x = 2,074,657.17/1,426.40
6. Step 6: Final answer
   x = 1,454.47