Finding the Fourth Proportional to 1,379.13, 1,903.00 and 819.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.13 : 1,903.00 = 819.62 : x
2. Step 2: Convert to fraction form
   1,379.13/1,903.00 = 819.62/x
3. Step 3: Cross multiply
   1,379.13x = 1,903.00 × 819.62
4. Step 4: Simplify right side
   1,379.13x = 1,559,732.76
5. Step 5: Solve for x
   x = 1,559,732.76/1,379.13
6. Step 6: Final answer
   x = 1,130.95