Finding the Fourth Proportional to 2,112.63, 3,169.56 and 651.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.63 : 3,169.56 = 651.93 : x
2. Step 2: Convert to fraction form
   2,112.63/3,169.56 = 651.93/x
3. Step 3: Cross multiply
   2,112.63x = 3,169.56 × 651.93
4. Step 4: Simplify right side
   2,112.63x = 2,066,331.25
5. Step 5: Solve for x
   x = 2,066,331.25/2,112.63
6. Step 6: Final answer
   x = 978.08