Finding the Fourth Proportional to 1,630.47, 2,444.54 and 764.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.47 : 2,444.54 = 764.31 : x
2. Step 2: Convert to fraction form
   1,630.47/2,444.54 = 764.31/x
3. Step 3: Cross multiply
   1,630.47x = 2,444.54 × 764.31
4. Step 4: Simplify right side
   1,630.47x = 1,868,382.55
5. Step 5: Solve for x
   x = 1,868,382.55/1,630.47
6. Step 6: Final answer
   x = 1,145.92