Finding the Fourth Proportional to 1,572.81, 2,356.79 and 1,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,572.81 : 2,356.79 = 1,045.50 : x
2. Step 2: Convert to fraction form
   1,572.81/2,356.79 = 1,045.50/x
3. Step 3: Cross multiply
   1,572.81x = 2,356.79 × 1,045.50
4. Step 4: Simplify right side
   1,572.81x = 2,464,018.72
5. Step 5: Solve for x
   x = 2,464,018.72/1,572.81
6. Step 6: Final answer
   x = 1,566.63