Finding the Fourth Proportional to 4,707.47, 7,061.24 and 1,420.55

Step by Step Solution

1. Step 1: Write the proportion equation
   4,707.47 : 7,061.24 = 1,420.55 : x
2. Step 2: Convert to fraction form
   4,707.47/7,061.24 = 1,420.55/x
3. Step 3: Cross multiply
   4,707.47x = 7,061.24 × 1,420.55
4. Step 4: Simplify right side
   4,707.47x = 10,030,844.48
5. Step 5: Solve for x
   x = 10,030,844.48/4,707.47
6. Step 6: Final answer
   x = 2,130.84