Finding the Fourth Proportional to 1,476.72, 2,037.85 and 813.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,476.72 : 2,037.85 = 813.57 : x
2. Step 2: Convert to fraction form
   1,476.72/2,037.85 = 813.57/x
3. Step 3: Cross multiply
   1,476.72x = 2,037.85 × 813.57
4. Step 4: Simplify right side
   1,476.72x = 1,657,933.62
5. Step 5: Solve for x
   x = 1,657,933.62/1,476.72
6. Step 6: Final answer
   x = 1,122.71