Finding the Fourth Proportional to 1,412.59, 1,948.60 and 993.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.59 : 1,948.60 = 993.58 : x
2. Step 2: Convert to fraction form
   1,412.59/1,948.60 = 993.58/x
3. Step 3: Cross multiply
   1,412.59x = 1,948.60 × 993.58
4. Step 4: Simplify right side
   1,412.59x = 1,936,085.02
5. Step 5: Solve for x
   x = 1,936,085.02/1,412.59
6. Step 6: Final answer
   x = 1,370.60