Finding the Fourth Proportional to 1,171.04, 1,616.01 and 647.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.04 : 1,616.01 = 647.07 : x
2. Step 2: Convert to fraction form
   1,171.04/1,616.01 = 647.07/x
3. Step 3: Cross multiply
   1,171.04x = 1,616.01 × 647.07
4. Step 4: Simplify right side
   1,171.04x = 1,045,671.59
5. Step 5: Solve for x
   x = 1,045,671.59/1,171.04
6. Step 6: Final answer
   x = 892.95