Finding the Fourth Proportional to 2,003.48, 2,986.70 and 1,971.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.48 : 2,986.70 = 1,971.92 : x
2. Step 2: Convert to fraction form
   2,003.48/2,986.70 = 1,971.92/x
3. Step 3: Cross multiply
   2,003.48x = 2,986.70 × 1,971.92
4. Step 4: Simplify right side
   2,003.48x = 5,889,533.46
5. Step 5: Solve for x
   x = 5,889,533.46/2,003.48
6. Step 6: Final answer
   x = 2,939.65