Finding the Fourth Proportional to 1,784.94, 2,667.07 and 1,288.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,784.94 : 2,667.07 = 1,288.99 : x
2. Step 2: Convert to fraction form
   1,784.94/2,667.07 = 1,288.99/x
3. Step 3: Cross multiply
   1,784.94x = 2,667.07 × 1,288.99
4. Step 4: Simplify right side
   1,784.94x = 3,437,826.56
5. Step 5: Solve for x
   x = 3,437,826.56/1,784.94
6. Step 6: Final answer
   x = 1,926.02