Finding the Fourth Proportional to 2,623.86, 3,618.72 and 1,575.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.86 : 3,618.72 = 1,575.72 : x
2. Step 2: Convert to fraction form
   2,623.86/3,618.72 = 1,575.72/x
3. Step 3: Cross multiply
   2,623.86x = 3,618.72 × 1,575.72
4. Step 4: Simplify right side
   2,623.86x = 5,702,089.48
5. Step 5: Solve for x
   x = 5,702,089.48/2,623.86
6. Step 6: Final answer
   x = 2,173.17