Finding the Fourth Proportional to 2,478.42, 3,420.06 and 1,430.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.42 : 3,420.06 = 1,430.46 : x
2. Step 2: Convert to fraction form
   2,478.42/3,420.06 = 1,430.46/x
3. Step 3: Cross multiply
   2,478.42x = 3,420.06 × 1,430.46
4. Step 4: Simplify right side
   2,478.42x = 4,892,259.03
5. Step 5: Solve for x
   x = 4,892,259.03/2,478.42
6. Step 6: Final answer
   x = 1,973.94