Finding the Fourth Proportional to 4,707.42, 7,061.31 and 1,420.51

Step by Step Solution

1. Step 1: Write the proportion equation
   4,707.42 : 7,061.31 = 1,420.51 : x
2. Step 2: Convert to fraction form
   4,707.42/7,061.31 = 1,420.51/x
3. Step 3: Cross multiply
   4,707.42x = 7,061.31 × 1,420.51
4. Step 4: Simplify right side
   4,707.42x = 10,030,619.06
5. Step 5: Solve for x
   x = 10,030,619.06/4,707.42
6. Step 6: Final answer
   x = 2,130.81