Finding the Fourth Proportional to 1,380.63, 1,904.64 and 962.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.63 : 1,904.64 = 962.01 : x
2. Step 2: Convert to fraction form
   1,380.63/1,904.64 = 962.01/x
3. Step 3: Cross multiply
   1,380.63x = 1,904.64 × 962.01
4. Step 4: Simplify right side
   1,380.63x = 1,832,282.73
5. Step 5: Solve for x
   x = 1,832,282.73/1,380.63
6. Step 6: Final answer
   x = 1,327.14