Finding the Fourth Proportional to 1,421.04, 1,961.82 and 981.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.04 : 1,961.82 = 981.32 : x
2. Step 2: Convert to fraction form
   1,421.04/1,961.82 = 981.32/x
3. Step 3: Cross multiply
   1,421.04x = 1,961.82 × 981.32
4. Step 4: Simplify right side
   1,421.04x = 1,925,163.39
5. Step 5: Solve for x
   x = 1,925,163.39/1,421.04
6. Step 6: Final answer
   x = 1,354.75