Finding the Fourth Proportional to 1,486.31, 2,045.88 and 1,298.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,486.31 : 2,045.88 = 1,298.30 : x
2. Step 2: Convert to fraction form
   1,486.31/2,045.88 = 1,298.30/x
3. Step 3: Cross multiply
   1,486.31x = 2,045.88 × 1,298.30
4. Step 4: Simplify right side
   1,486.31x = 2,656,155.77
5. Step 5: Solve for x
   x = 2,656,155.77/1,486.31
6. Step 6: Final answer
   x = 1,787.09