Finding the Fourth Proportional to 1,111.02, 1,666.56 and 341.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.02 : 1,666.56 = 341.52 : x
2. Step 2: Convert to fraction form
   1,111.02/1,666.56 = 341.52/x
3. Step 3: Cross multiply
   1,111.02x = 1,666.56 × 341.52
4. Step 4: Simplify right side
   1,111.02x = 569,163.57
5. Step 5: Solve for x
   x = 569,163.57/1,111.02
6. Step 6: Final answer
   x = 512.29