Finding the Fourth Proportional to 3,196.32, 4,792.56 and 1,320.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.32 : 4,792.56 = 1,320.77 : x
2. Step 2: Convert to fraction form
   3,196.32/4,792.56 = 1,320.77/x
3. Step 3: Cross multiply
   3,196.32x = 4,792.56 × 1,320.77
4. Step 4: Simplify right side
   3,196.32x = 6,329,845.51
5. Step 5: Solve for x
   x = 6,329,845.51/3,196.32
6. Step 6: Final answer
   x = 1,980.35