Finding the Fourth Proportional to 1,468.95, 2,021.76 and 1,288.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,468.95 : 2,021.76 = 1,288.50 : x
2. Step 2: Convert to fraction form
   1,468.95/2,021.76 = 1,288.50/x
3. Step 3: Cross multiply
   1,468.95x = 2,021.76 × 1,288.50
4. Step 4: Simplify right side
   1,468.95x = 2,605,037.76
5. Step 5: Solve for x
   x = 2,605,037.76/1,468.95
6. Step 6: Final answer
   x = 1,773.40