Finding the Fourth Proportional to 1,345.55, 2,018.34 and 886.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.55 : 2,018.34 = 886.27 : x
2. Step 2: Convert to fraction form
   1,345.55/2,018.34 = 886.27/x
3. Step 3: Cross multiply
   1,345.55x = 2,018.34 × 886.27
4. Step 4: Simplify right side
   1,345.55x = 1,788,781.88
5. Step 5: Solve for x
   x = 1,788,781.88/1,345.55
6. Step 6: Final answer
   x = 1,329.41