Finding the Fourth Proportional to 1,815.31, 2,504.20 and 1,069.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,815.31 : 2,504.20 = 1,069.23 : x
2. Step 2: Convert to fraction form
   1,815.31/2,504.20 = 1,069.23/x
3. Step 3: Cross multiply
   1,815.31x = 2,504.20 × 1,069.23
4. Step 4: Simplify right side
   1,815.31x = 2,677,560.42
5. Step 5: Solve for x
   x = 2,677,560.42/1,815.31
6. Step 6: Final answer
   x = 1,474.99