Finding the Fourth Proportional to 1,978.99, 2,963.01 and 1,000.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.99 : 2,963.01 = 1,000.31 : x
2. Step 2: Convert to fraction form
   1,978.99/2,963.01 = 1,000.31/x
3. Step 3: Cross multiply
   1,978.99x = 2,963.01 × 1,000.31
4. Step 4: Simplify right side
   1,978.99x = 2,963,917.47
5. Step 5: Solve for x
   x = 2,963,917.47/1,978.99
6. Step 6: Final answer
   x = 1,497.69