Finding the Fourth Proportional to 1,061.70, 1,570.02 and 1,061.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.70 : 1,570.02 = 1,061.70 : x
2. Step 2: Convert to fraction form
   1,061.70/1,570.02 = 1,061.70/x
3. Step 3: Cross multiply
   1,061.70x = 1,570.02 × 1,061.70
4. Step 4: Simplify right side
   1,061.70x = 1,666,890.23
5. Step 5: Solve for x
   x = 1,666,890.23/1,061.70
6. Step 6: Final answer
   x = 1,570.02