Finding the Fourth Proportional to 1,377.21, 1,900.54 and 747.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.21 : 1,900.54 = 747.73 : x
2. Step 2: Convert to fraction form
   1,377.21/1,900.54 = 747.73/x
3. Step 3: Cross multiply
   1,377.21x = 1,900.54 × 747.73
4. Step 4: Simplify right side
   1,377.21x = 1,421,101.53
5. Step 5: Solve for x
   x = 1,421,101.53/1,377.21
6. Step 6: Final answer
   x = 1,031.87