Finding the Fourth Proportional to 1,117.49, 1,675.69 and 707.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117.49 : 1,675.69 = 707.42 : x
2. Step 2: Convert to fraction form
   1,117.49/1,675.69 = 707.42/x
3. Step 3: Cross multiply
   1,117.49x = 1,675.69 × 707.42
4. Step 4: Simplify right side
   1,117.49x = 1,185,419.04
5. Step 5: Solve for x
   x = 1,185,419.04/1,117.49
6. Step 6: Final answer
   x = 1,060.79