Finding the Fourth Proportional to 1,378,443.35, 2,063,432.72 and 1,248,535.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378,443.35 : 2,063,432.72 = 1,248,535.55 : x
2. Step 2: Convert to fraction form
   1,378,443.35/2,063,432.72 = 1,248,535.55/x
3. Step 3: Cross multiply
   1,378,443.35x = 2,063,432.72 × 1,248,535.55
4. Step 4: Simplify right side
   1,378,443.35x = 2,576,269,089,393.35
5. Step 5: Solve for x
   x = 2,576,269,089,393.35/1,378,443.35
6. Step 6: Final answer
   x = 1,868,969.88