Finding the Fourth Proportional to 1,667.60, 2,498.28 and 1,395.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.60 : 2,498.28 = 1,395.44 : x
2. Step 2: Convert to fraction form
   1,667.60/2,498.28 = 1,395.44/x
3. Step 3: Cross multiply
   1,667.60x = 2,498.28 × 1,395.44
4. Step 4: Simplify right side
   1,667.60x = 3,486,199.84
5. Step 5: Solve for x
   x = 3,486,199.84/1,667.60
6. Step 6: Final answer
   x = 2,090.55