Finding the Fourth Proportional to 1,780.34, 2,455.25 and 1,359.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.34 : 2,455.25 = 1,359.91 : x
2. Step 2: Convert to fraction form
   1,780.34/2,455.25 = 1,359.91/x
3. Step 3: Cross multiply
   1,780.34x = 2,455.25 × 1,359.91
4. Step 4: Simplify right side
   1,780.34x = 3,338,915.30
5. Step 5: Solve for x
   x = 3,338,915.30/1,780.34
6. Step 6: Final answer
   x = 1,875.44