Finding the Fourth Proportional to 2,178.07, 3,264.55 and 1,005.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.07 : 3,264.55 = 1,005.59 : x
2. Step 2: Convert to fraction form
   2,178.07/3,264.55 = 1,005.59/x
3. Step 3: Cross multiply
   2,178.07x = 3,264.55 × 1,005.59
4. Step 4: Simplify right side
   2,178.07x = 3,282,804.48
5. Step 5: Solve for x
   x = 3,282,804.48/2,178.07
6. Step 6: Final answer
   x = 1,507.21