Finding the Fourth Proportional to 1,215.55, 1,824.23 and 981.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215.55 : 1,824.23 = 981.82 : x
2. Step 2: Convert to fraction form
   1,215.55/1,824.23 = 981.82/x
3. Step 3: Cross multiply
   1,215.55x = 1,824.23 × 981.82
4. Step 4: Simplify right side
   1,215.55x = 1,791,065.50
5. Step 5: Solve for x
   x = 1,791,065.50/1,215.55
6. Step 6: Final answer
   x = 1,473.46