Finding the Fourth Proportional to 2,140.61, 2,953.78 and 1,196.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.61 : 2,953.78 = 1,196.47 : x
2. Step 2: Convert to fraction form
   2,140.61/2,953.78 = 1,196.47/x
3. Step 3: Cross multiply
   2,140.61x = 2,953.78 × 1,196.47
4. Step 4: Simplify right side
   2,140.61x = 3,534,109.16
5. Step 5: Solve for x
   x = 3,534,109.16/2,140.61
6. Step 6: Final answer
   x = 1,650.98