Finding the Fourth Proportional to 3,533.60, 4,875.72 and 2,290.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,533.60 : 4,875.72 = 2,290.88 : x
2. Step 2: Convert to fraction form
   3,533.60/4,875.72 = 2,290.88/x
3. Step 3: Cross multiply
   3,533.60x = 4,875.72 × 2,290.88
4. Step 4: Simplify right side
   3,533.60x = 11,169,665.06
5. Step 5: Solve for x
   x = 11,169,665.06/3,533.60
6. Step 6: Final answer
   x = 3,160.99