Finding the Fourth Proportional to 1,372.78, 1,881.72 and 1,354.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.78 : 1,881.72 = 1,354.32 : x
2. Step 2: Convert to fraction form
   1,372.78/1,881.72 = 1,354.32/x
3. Step 3: Cross multiply
   1,372.78x = 1,881.72 × 1,354.32
4. Step 4: Simplify right side
   1,372.78x = 2,548,451.03
5. Step 5: Solve for x
   x = 2,548,451.03/1,372.78
6. Step 6: Final answer
   x = 1,856.42