Finding the Fourth Proportional to 1,821.69, 2,513.90 and 1,035.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.69 : 2,513.90 = 1,035.72 : x
2. Step 2: Convert to fraction form
   1,821.69/2,513.90 = 1,035.72/x
3. Step 3: Cross multiply
   1,821.69x = 2,513.90 × 1,035.72
4. Step 4: Simplify right side
   1,821.69x = 2,603,699.10
5. Step 5: Solve for x
   x = 2,603,699.10/1,821.69
6. Step 6: Final answer
   x = 1,429.28