Finding the Fourth Proportional to 4,870.17, 7,305.30 and 1,407.42

Step by Step Solution

1. Step 1: Write the proportion equation
   4,870.17 : 7,305.30 = 1,407.42 : x
2. Step 2: Convert to fraction form
   4,870.17/7,305.30 = 1,407.42/x
3. Step 3: Cross multiply
   4,870.17x = 7,305.30 × 1,407.42
4. Step 4: Simplify right side
   4,870.17x = 10,281,625.33
5. Step 5: Solve for x
   x = 10,281,625.33/4,870.17
6. Step 6: Final answer
   x = 2,111.14