Finding the Fourth Proportional to 1,093.31, 1,510.53 and 763.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.31 : 1,510.53 = 763.21 : x
2. Step 2: Convert to fraction form
   1,093.31/1,510.53 = 763.21/x
3. Step 3: Cross multiply
   1,093.31x = 1,510.53 × 763.21
4. Step 4: Simplify right side
   1,093.31x = 1,152,853.51
5. Step 5: Solve for x
   x = 1,152,853.51/1,093.31
6. Step 6: Final answer
   x = 1,054.46