Finding the Fourth Proportional to 1,157.69, 1,734.82 and 1,047.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,157.69 : 1,734.82 = 1,047.94 : x
2. Step 2: Convert to fraction form
   1,157.69/1,734.82 = 1,047.94/x
3. Step 3: Cross multiply
   1,157.69x = 1,734.82 × 1,047.94
4. Step 4: Simplify right side
   1,157.69x = 1,817,980.31
5. Step 5: Solve for x
   x = 1,817,980.31/1,157.69
6. Step 6: Final answer
   x = 1,570.35