Finding the Fourth Proportional to 1,821.42, 2,513.58 and 1,113.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.42 : 2,513.58 = 1,113.18 : x
2. Step 2: Convert to fraction form
   1,821.42/2,513.58 = 1,113.18/x
3. Step 3: Cross multiply
   1,821.42x = 2,513.58 × 1,113.18
4. Step 4: Simplify right side
   1,821.42x = 2,798,066.98
5. Step 5: Solve for x
   x = 2,798,066.98/1,821.42
6. Step 6: Final answer
   x = 1,536.20