Finding the Fourth Proportional to 1,670.13, 2,303.72 and 1,339.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,670.13 : 2,303.72 = 1,339.35 : x
2. Step 2: Convert to fraction form
   1,670.13/2,303.72 = 1,339.35/x
3. Step 3: Cross multiply
   1,670.13x = 2,303.72 × 1,339.35
4. Step 4: Simplify right side
   1,670.13x = 3,085,480.69
5. Step 5: Solve for x
   x = 3,085,480.69/1,670.13
6. Step 6: Final answer
   x = 1,847.45