Finding the Fourth Proportional to 1,513.19, 2,083.42 and 1,374.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.19 : 2,083.42 = 1,374.78 : x
2. Step 2: Convert to fraction form
   1,513.19/2,083.42 = 1,374.78/x
3. Step 3: Cross multiply
   1,513.19x = 2,083.42 × 1,374.78
4. Step 4: Simplify right side
   1,513.19x = 2,864,244.15
5. Step 5: Solve for x
   x = 2,864,244.15/1,513.19
6. Step 6: Final answer
   x = 1,892.85