Finding the Fourth Proportional to 1,105.55, 1,655.76 and 671.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.55 : 1,655.76 = 671.93 : x
2. Step 2: Convert to fraction form
   1,105.55/1,655.76 = 671.93/x
3. Step 3: Cross multiply
   1,105.55x = 1,655.76 × 671.93
4. Step 4: Simplify right side
   1,105.55x = 1,112,554.82
5. Step 5: Solve for x
   x = 1,112,554.82/1,105.55
6. Step 6: Final answer
   x = 1,006.34