Finding the Fourth Proportional to 2,127.16, 2,935.54 and 1,288.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.16 : 2,935.54 = 1,288.01 : x
2. Step 2: Convert to fraction form
   2,127.16/2,935.54 = 1,288.01/x
3. Step 3: Cross multiply
   2,127.16x = 2,935.54 × 1,288.01
4. Step 4: Simplify right side
   2,127.16x = 3,781,004.88
5. Step 5: Solve for x
   x = 3,781,004.88/2,127.16
6. Step 6: Final answer
   x = 1,777.49