Finding the Fourth Proportional to 1,490.52, 2,225.67 and 1,388.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.52 : 2,225.67 = 1,388.46 : x
2. Step 2: Convert to fraction form
   1,490.52/2,225.67 = 1,388.46/x
3. Step 3: Cross multiply
   1,490.52x = 2,225.67 × 1,388.46
4. Step 4: Simplify right side
   1,490.52x = 3,090,253.77
5. Step 5: Solve for x
   x = 3,090,253.77/1,490.52
6. Step 6: Final answer
   x = 2,073.27