Finding the Fourth Proportional to 1,820.52, 2,730.69 and 521.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820.52 : 2,730.69 = 521.94 : x
2. Step 2: Convert to fraction form
   1,820.52/2,730.69 = 521.94/x
3. Step 3: Cross multiply
   1,820.52x = 2,730.69 × 521.94
4. Step 4: Simplify right side
   1,820.52x = 1,425,256.34
5. Step 5: Solve for x
   x = 1,425,256.34/1,820.52
6. Step 6: Final answer
   x = 782.88