Finding the Fourth Proportional to 2,083.60, 3,129.72 and 1,653.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.60 : 3,129.72 = 1,653.76 : x
2. Step 2: Convert to fraction form
   2,083.60/3,129.72 = 1,653.76/x
3. Step 3: Cross multiply
   2,083.60x = 3,129.72 × 1,653.76
4. Step 4: Simplify right side
   2,083.60x = 5,175,805.75
5. Step 5: Solve for x
   x = 5,175,805.75/2,083.60
6. Step 6: Final answer
   x = 2,484.07