Finding the Fourth Proportional to 1,528.43, 2,111.00 and 1,214.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.43 : 2,111.00 = 1,214.69 : x
2. Step 2: Convert to fraction form
   1,528.43/2,111.00 = 1,214.69/x
3. Step 3: Cross multiply
   1,528.43x = 2,111.00 × 1,214.69
4. Step 4: Simplify right side
   1,528.43x = 2,564,193.96
5. Step 5: Solve for x
   x = 2,564,193.96/1,528.43
6. Step 6: Final answer
   x = 1,677.67