Finding the Fourth Proportional to 2,520.60, 3,477.72 and 1,588.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.60 : 3,477.72 = 1,588.56 : x
2. Step 2: Convert to fraction form
   2,520.60/3,477.72 = 1,588.56/x
3. Step 3: Cross multiply
   2,520.60x = 3,477.72 × 1,588.56
4. Step 4: Simplify right side
   2,520.60x = 5,524,566.88
5. Step 5: Solve for x
   x = 5,524,566.88/2,520.60
6. Step 6: Final answer
   x = 2,191.77