Finding the Fourth Proportional to 3,620.63, 5,431.23 and 1,023.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,620.63 : 5,431.23 = 1,023.59 : x
2. Step 2: Convert to fraction form
   3,620.63/5,431.23 = 1,023.59/x
3. Step 3: Cross multiply
   3,620.63x = 5,431.23 × 1,023.59
4. Step 4: Simplify right side
   3,620.63x = 5,559,352.72
5. Step 5: Solve for x
   x = 5,559,352.72/3,620.63
6. Step 6: Final answer
   x = 1,535.47