Finding the Fourth Proportional to 1,772.02, 2,644.70 and 1,539.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,772.02 : 2,644.70 = 1,539.55 : x
2. Step 2: Convert to fraction form
   1,772.02/2,644.70 = 1,539.55/x
3. Step 3: Cross multiply
   1,772.02x = 2,644.70 × 1,539.55
4. Step 4: Simplify right side
   1,772.02x = 4,071,647.89
5. Step 5: Solve for x
   x = 4,071,647.89/1,772.02
6. Step 6: Final answer
   x = 2,297.74