Finding the Fourth Proportional to 1,573.72, 2,359.68 and 1,054.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,573.72 : 2,359.68 = 1,054.34 : x
2. Step 2: Convert to fraction form
   1,573.72/2,359.68 = 1,054.34/x
3. Step 3: Cross multiply
   1,573.72x = 2,359.68 × 1,054.34
4. Step 4: Simplify right side
   1,573.72x = 2,487,905.01
5. Step 5: Solve for x
   x = 2,487,905.01/1,573.72
6. Step 6: Final answer
   x = 1,580.91