Finding the Fourth Proportional to 2,188.13, 3,019.61 and 1,402.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.13 : 3,019.61 = 1,402.18 : x
2. Step 2: Convert to fraction form
   2,188.13/3,019.61 = 1,402.18/x
3. Step 3: Cross multiply
   2,188.13x = 3,019.61 × 1,402.18
4. Step 4: Simplify right side
   2,188.13x = 4,234,032.71
5. Step 5: Solve for x
   x = 4,234,032.71/2,188.13
6. Step 6: Final answer
   x = 1,935.00