Finding the Fourth Proportional to 1,663.04, 2,490.78 and 1,012.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663.04 : 2,490.78 = 1,012.34 : x
2. Step 2: Convert to fraction form
   1,663.04/2,490.78 = 1,012.34/x
3. Step 3: Cross multiply
   1,663.04x = 2,490.78 × 1,012.34
4. Step 4: Simplify right side
   1,663.04x = 2,521,516.23
5. Step 5: Solve for x
   x = 2,521,516.23/1,663.04
6. Step 6: Final answer
   x = 1,516.21