Finding the Fourth Proportional to 1,954.53, 2,929.31 and 1,407.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,954.53 : 2,929.31 = 1,407.78 : x
2. Step 2: Convert to fraction form
   1,954.53/2,929.31 = 1,407.78/x
3. Step 3: Cross multiply
   1,954.53x = 2,929.31 × 1,407.78
4. Step 4: Simplify right side
   1,954.53x = 4,123,824.03
5. Step 5: Solve for x
   x = 4,123,824.03/1,954.53
6. Step 6: Final answer
   x = 2,109.88