Finding the Fourth Proportional to 2,057.76, 2,840.04 and 1,173.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.76 : 2,840.04 = 1,173.60 : x
2. Step 2: Convert to fraction form
   2,057.76/2,840.04 = 1,173.60/x
3. Step 3: Cross multiply
   2,057.76x = 2,840.04 × 1,173.60
4. Step 4: Simplify right side
   2,057.76x = 3,333,070.94
5. Step 5: Solve for x
   x = 3,333,070.94/2,057.76
6. Step 6: Final answer
   x = 1,619.76