Finding the Fourth Proportional to 1,426.32, 1,971.72 and 1,368.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.32 : 1,971.72 = 1,368.72 : x
2. Step 2: Convert to fraction form
   1,426.32/1,971.72 = 1,368.72/x
3. Step 3: Cross multiply
   1,426.32x = 1,971.72 × 1,368.72
4. Step 4: Simplify right side
   1,426.32x = 2,698,732.60
5. Step 5: Solve for x
   x = 2,698,732.60/1,426.32
6. Step 6: Final answer
   x = 1,892.09