Finding the Fourth Proportional to 1,345.68, 1,857.94 and 904.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.68 : 1,857.94 = 904.37 : x
2. Step 2: Convert to fraction form
   1,345.68/1,857.94 = 904.37/x
3. Step 3: Cross multiply
   1,345.68x = 1,857.94 × 904.37
4. Step 4: Simplify right side
   1,345.68x = 1,680,253.65
5. Step 5: Solve for x
   x = 1,680,253.65/1,345.68
6. Step 6: Final answer
   x = 1,248.63