Finding the Fourth Proportional to 1,416.72, 2,123.32 and 837.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,416.72 : 2,123.32 = 837.84 : x
2. Step 2: Convert to fraction form
   1,416.72/2,123.32 = 837.84/x
3. Step 3: Cross multiply
   1,416.72x = 2,123.32 × 837.84
4. Step 4: Simplify right side
   1,416.72x = 1,779,002.43
5. Step 5: Solve for x
   x = 1,779,002.43/1,416.72
6. Step 6: Final answer
   x = 1,255.72