Finding the Fourth Proportional to 1,109.67, 1,663.03 and 848.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.67 : 1,663.03 = 848.72 : x
2. Step 2: Convert to fraction form
   1,109.67/1,663.03 = 848.72/x
3. Step 3: Cross multiply
   1,109.67x = 1,663.03 × 848.72
4. Step 4: Simplify right side
   1,109.67x = 1,411,446.82
5. Step 5: Solve for x
   x = 1,411,446.82/1,109.67
6. Step 6: Final answer
   x = 1,271.95