Finding the Fourth Proportional to 1,602.59, 2,393.70 and 1,256.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,602.59 : 2,393.70 = 1,256.31 : x
2. Step 2: Convert to fraction form
   1,602.59/2,393.70 = 1,256.31/x
3. Step 3: Cross multiply
   1,602.59x = 2,393.70 × 1,256.31
4. Step 4: Simplify right side
   1,602.59x = 3,007,231.60
5. Step 5: Solve for x
   x = 3,007,231.60/1,602.59
6. Step 6: Final answer
   x = 1,876.49