Finding the Fourth Proportional to 1,530.02, 2,111.64 and 932.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.02 : 2,111.64 = 932.78 : x
2. Step 2: Convert to fraction form
   1,530.02/2,111.64 = 932.78/x
3. Step 3: Cross multiply
   1,530.02x = 2,111.64 × 932.78
4. Step 4: Simplify right side
   1,530.02x = 1,969,695.56
5. Step 5: Solve for x
   x = 1,969,695.56/1,530.02
6. Step 6: Final answer
   x = 1,287.37