Finding the Fourth Proportional to 1,380.30, 1,904.01 and 882.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.30 : 1,904.01 = 882.76 : x
2. Step 2: Convert to fraction form
   1,380.30/1,904.01 = 882.76/x
3. Step 3: Cross multiply
   1,380.30x = 1,904.01 × 882.76
4. Step 4: Simplify right side
   1,380.30x = 1,680,774.01
5. Step 5: Solve for x
   x = 1,680,774.01/1,380.30
6. Step 6: Final answer
   x = 1,217.69