Finding the Fourth Proportional to 1,528.56, 2,296.47 and 981.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.56 : 2,296.47 = 981.81 : x
2. Step 2: Convert to fraction form
   1,528.56/2,296.47 = 981.81/x
3. Step 3: Cross multiply
   1,528.56x = 2,296.47 × 981.81
4. Step 4: Simplify right side
   1,528.56x = 2,254,697.21
5. Step 5: Solve for x
   x = 2,254,697.21/1,528.56
6. Step 6: Final answer
   x = 1,475.05