Finding the Fourth Proportional to 1,425.93, 1,967.76 and 1,005.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.93 : 1,967.76 = 1,005.84 : x
2. Step 2: Convert to fraction form
   1,425.93/1,967.76 = 1,005.84/x
3. Step 3: Cross multiply
   1,425.93x = 1,967.76 × 1,005.84
4. Step 4: Simplify right side
   1,425.93x = 1,979,251.72
5. Step 5: Solve for x
   x = 1,979,251.72/1,425.93
6. Step 6: Final answer
   x = 1,388.05