Finding the Fourth Proportional to 1,356.60, 1,870.34 and 1,338.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.60 : 1,870.34 = 1,338.24 : x
2. Step 2: Convert to fraction form
   1,356.60/1,870.34 = 1,338.24/x
3. Step 3: Cross multiply
   1,356.60x = 1,870.34 × 1,338.24
4. Step 4: Simplify right side
   1,356.60x = 2,502,963.80
5. Step 5: Solve for x
   x = 2,502,963.80/1,356.60
6. Step 6: Final answer
   x = 1,845.03