Finding the Fourth Proportional to 1,005,123.19, 1,387,074.50 and 552,443.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005,123.19 : 1,387,074.50 = 552,443.35 : x
2. Step 2: Convert to fraction form
   1,005,123.19/1,387,074.50 = 552,443.35/x
3. Step 3: Cross multiply
   1,005,123.19x = 1,387,074.50 × 552,443.35
4. Step 4: Simplify right side
   1,005,123.19x = 766,280,083,479.58
5. Step 5: Solve for x
   x = 766,280,083,479.58/1,005,123.19
6. Step 6: Final answer
   x = 762,374.30