Finding the Fourth Proportional to 2,178.95, 3,267.51 and 1,023.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.95 : 3,267.51 = 1,023.89 : x
2. Step 2: Convert to fraction form
   2,178.95/3,267.51 = 1,023.89/x
3. Step 3: Cross multiply
   2,178.95x = 3,267.51 × 1,023.89
4. Step 4: Simplify right side
   2,178.95x = 3,345,570.81
5. Step 5: Solve for x
   x = 3,345,570.81/2,178.95
6. Step 6: Final answer
   x = 1,535.41