Finding the Fourth Proportional to 1,217.67, 1,830.29 and 1,013.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217.67 : 1,830.29 = 1,013.55 : x
2. Step 2: Convert to fraction form
   1,217.67/1,830.29 = 1,013.55/x
3. Step 3: Cross multiply
   1,217.67x = 1,830.29 × 1,013.55
4. Step 4: Simplify right side
   1,217.67x = 1,855,090.43
5. Step 5: Solve for x
   x = 1,855,090.43/1,217.67
6. Step 6: Final answer
   x = 1,523.48