Finding the Fourth Proportional to 981.05, 1,475.69 and 972.81

Step by Step Solution

1. Step 1: Write the proportion equation
   981.05 : 1,475.69 = 972.81 : x
2. Step 2: Convert to fraction form
   981.05/1,475.69 = 972.81/x
3. Step 3: Cross multiply
   981.05x = 1,475.69 × 972.81
4. Step 4: Simplify right side
   981.05x = 1,435,561.12
5. Step 5: Solve for x
   x = 1,435,561.12/981.05
6. Step 6: Final answer
   x = 1,463.30