Finding the Fourth Proportional to 1,335.23, 1,842.13 and 837.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.23 : 1,842.13 = 837.69 : x
2. Step 2: Convert to fraction form
   1,335.23/1,842.13 = 837.69/x
3. Step 3: Cross multiply
   1,335.23x = 1,842.13 × 837.69
4. Step 4: Simplify right side
   1,335.23x = 1,543,123.31
5. Step 5: Solve for x
   x = 1,543,123.31/1,335.23
6. Step 6: Final answer
   x = 1,155.70