Finding the Fourth Proportional to 1,514.78, 2,272.86 and 693.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,514.78 : 2,272.86 = 693.30 : x
2. Step 2: Convert to fraction form
   1,514.78/2,272.86 = 693.30/x
3. Step 3: Cross multiply
   1,514.78x = 2,272.86 × 693.30
4. Step 4: Simplify right side
   1,514.78x = 1,575,773.84
5. Step 5: Solve for x
   x = 1,575,773.84/1,514.78
6. Step 6: Final answer
   x = 1,040.27