Finding the Fourth Proportional to 1,401.16, 2,101.68 and 476.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.16 : 2,101.68 = 476.72 : x
2. Step 2: Convert to fraction form
   1,401.16/2,101.68 = 476.72/x
3. Step 3: Cross multiply
   1,401.16x = 2,101.68 × 476.72
4. Step 4: Simplify right side
   1,401.16x = 1,001,912.89
5. Step 5: Solve for x
   x = 1,001,912.89/1,401.16
6. Step 6: Final answer
   x = 715.06