Finding the Fourth Proportional to 1,488.32, 2,219.18 and 1,434.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.32 : 2,219.18 = 1,434.96 : x
2. Step 2: Convert to fraction form
   1,488.32/2,219.18 = 1,434.96/x
3. Step 3: Cross multiply
   1,488.32x = 2,219.18 × 1,434.96
4. Step 4: Simplify right side
   1,488.32x = 3,184,434.53
5. Step 5: Solve for x
   x = 3,184,434.53/1,488.32
6. Step 6: Final answer
   x = 2,139.62