Finding the Fourth Proportional to 2,870.91, 4,303.73 and 1,117.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.91 : 4,303.73 = 1,117.09 : x
2. Step 2: Convert to fraction form
   2,870.91/4,303.73 = 1,117.09/x
3. Step 3: Cross multiply
   2,870.91x = 4,303.73 × 1,117.09
4. Step 4: Simplify right side
   2,870.91x = 4,807,653.75
5. Step 5: Solve for x
   x = 4,807,653.75/2,870.91
6. Step 6: Final answer
   x = 1,674.61