Finding the Fourth Proportional to 2,084.94, 2,875.91 and 1,288.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.94 : 2,875.91 = 1,288.05 : x
2. Step 2: Convert to fraction form
   2,084.94/2,875.91 = 1,288.05/x
3. Step 3: Cross multiply
   2,084.94x = 2,875.91 × 1,288.05
4. Step 4: Simplify right side
   2,084.94x = 3,704,314.83
5. Step 5: Solve for x
   x = 3,704,314.83/2,084.94
6. Step 6: Final answer
   x = 1,776.70