Finding the Fourth Proportional to 1,120.99, 1,547.16 and 648.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.99 : 1,547.16 = 648.82 : x
2. Step 2: Convert to fraction form
   1,120.99/1,547.16 = 648.82/x
3. Step 3: Cross multiply
   1,120.99x = 1,547.16 × 648.82
4. Step 4: Simplify right side
   1,120.99x = 1,003,828.35
5. Step 5: Solve for x
   x = 1,003,828.35/1,120.99
6. Step 6: Final answer
   x = 895.48