Finding the Fourth Proportional to 2,953.99, 4,428.15 and 1,287.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,953.99 : 4,428.15 = 1,287.01 : x
2. Step 2: Convert to fraction form
   2,953.99/4,428.15 = 1,287.01/x
3. Step 3: Cross multiply
   2,953.99x = 4,428.15 × 1,287.01
4. Step 4: Simplify right side
   2,953.99x = 5,699,073.33
5. Step 5: Solve for x
   x = 5,699,073.33/2,953.99
6. Step 6: Final answer
   x = 1,929.28