Finding the Fourth Proportional to 1,815.34, 2,505.12 and 1,029.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,815.34 : 2,505.12 = 1,029.46 : x
2. Step 2: Convert to fraction form
   1,815.34/2,505.12 = 1,029.46/x
3. Step 3: Cross multiply
   1,815.34x = 2,505.12 × 1,029.46
4. Step 4: Simplify right side
   1,815.34x = 2,578,920.84
5. Step 5: Solve for x
   x = 2,578,920.84/1,815.34
6. Step 6: Final answer
   x = 1,420.63