Finding the Fourth Proportional to 1,415.31, 2,108.62 and 1,345.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,415.31 : 2,108.62 = 1,345.60 : x
2. Step 2: Convert to fraction form
   1,415.31/2,108.62 = 1,345.60/x
3. Step 3: Cross multiply
   1,415.31x = 2,108.62 × 1,345.60
4. Step 4: Simplify right side
   1,415.31x = 2,837,358.34
5. Step 5: Solve for x
   x = 2,837,358.34/1,415.31
6. Step 6: Final answer
   x = 2,004.76