Finding the Fourth Proportional to 1,047.76, 1,570.51 and 354.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.76 : 1,570.51 = 354.25 : x
2. Step 2: Convert to fraction form
   1,047.76/1,570.51 = 354.25/x
3. Step 3: Cross multiply
   1,047.76x = 1,570.51 × 354.25
4. Step 4: Simplify right side
   1,047.76x = 556,353.17
5. Step 5: Solve for x
   x = 556,353.17/1,047.76
6. Step 6: Final answer
   x = 530.99