Finding the Fourth Proportional to 1,005,144, 1,387,098.72 and 552,435

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005,144 : 1,387,098.72 = 552,435 : x
2. Step 2: Convert to fraction form
   1,005,144/1,387,098.72 = 552,435/x
3. Step 3: Cross multiply
   1,005,144x = 1,387,098.72 × 552,435
4. Step 4: Simplify right side
   1,005,144x = 766,281,881,383.20
5. Step 5: Solve for x
   x = 766,281,881,383.20/1,005,144
6. Step 6: Final answer
   x = 762,360.30