Finding the Fourth Proportional to 1,400.90, 2,088.18 and 1,308.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.90 : 2,088.18 = 1,308.56 : x
2. Step 2: Convert to fraction form
   1,400.90/2,088.18 = 1,308.56/x
3. Step 3: Cross multiply
   1,400.90x = 2,088.18 × 1,308.56
4. Step 4: Simplify right side
   1,400.90x = 2,732,498.38
5. Step 5: Solve for x
   x = 2,732,498.38/1,400.90
6. Step 6: Final answer
   x = 1,950.54