Finding the Fourth Proportional to 1,300.40, 1,951.02 and 890.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.40 : 1,951.02 = 890.34 : x
2. Step 2: Convert to fraction form
   1,300.40/1,951.02 = 890.34/x
3. Step 3: Cross multiply
   1,300.40x = 1,951.02 × 890.34
4. Step 4: Simplify right side
   1,300.40x = 1,737,071.15
5. Step 5: Solve for x
   x = 1,737,071.15/1,300.40
6. Step 6: Final answer
   x = 1,335.80