Finding the Fourth Proportional to 1,401.89, 2,101.53 and 476.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.89 : 2,101.53 = 476.81 : x
2. Step 2: Convert to fraction form
   1,401.89/2,101.53 = 476.81/x
3. Step 3: Cross multiply
   1,401.89x = 2,101.53 × 476.81
4. Step 4: Simplify right side
   1,401.89x = 1,002,030.52
5. Step 5: Solve for x
   x = 1,002,030.52/1,401.89
6. Step 6: Final answer
   x = 714.77