Finding the Fourth Proportional to 1,913.17, 2,870.57 and 1,046.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913.17 : 2,870.57 = 1,046.47 : x
2. Step 2: Convert to fraction form
   1,913.17/2,870.57 = 1,046.47/x
3. Step 3: Cross multiply
   1,913.17x = 2,870.57 × 1,046.47
4. Step 4: Simplify right side
   1,913.17x = 3,003,960.16
5. Step 5: Solve for x
   x = 3,003,960.16/1,913.17
6. Step 6: Final answer
   x = 1,570.15